Web Security Overview
Error
HTTPS

Web sites need to use encryption to help their visitors know they're in the right place, as well as provide confidentiality and content integrity. Sites that don't support HTTPS may expose sensitive data and have their pages modified and subverted.
There are issues with this site's HTTPS configuration.

For all sites VERY IMPORTANT medium EFFORT
Supported and well configured
HTTPS Redirection

To deploy HTTPS properly, web sites must redirect all unsafe (plaintext) traffic to the encrypted variant. This approach ensures that no sensitive data is exposed and that further security technologies can be activated.

For all sites VERY IMPORTANT low EFFORT
Warning
HTTP Strict Transport Security

HTTP Strict Transport Security (HSTS) is an HTTPS extension that instructs browsers to remember sites that use encryption and enforce strict security requirements. Without HSTS, active network attacks are easy to carry out.
There are issues with this site's HSTS configuration.

For important sites VERY IMPORTANT medium EFFORT
Not supported
HSTS Preloaded

HSTS Preloading is informing browsers in advance about a site's use of HSTS, which means that strict security can be enforced even on the first visit. This approach provides best HTTPS security available today.

For important sites VERY IMPORTANT medium EFFORT
Supported and well configured
Content Security Policy

Content Security Policy (CSP) is an additional security layer that enables web sites to control browser behavior, creating a safety net that can counter attacks such as cross-site scripting.

For important sites IMPORTANT high EFFORT
Email Security Overview
Supported and well configured
STARTTLS

All hosts that receive email need encryption to ensure confidentiality of email messages. Email servers thus need to support STARTTLS, as well as provide decent TLS configuration and correct certificates.

For all sites VERY IMPORTANT low EFFORT
Supported and well configured
SPF

Sender Policy Framework (SPF) enables organizations to designate servers that are allowed to send email messages on their behalf. With SPF in place, spam is easier to identify.

For important sites IMPORTANT low EFFORT
Supported and well configured
DMARC

Domain-based Message Authentication, Reporting, and Conformance (DMARC) is a mechanism that allows organizations to specify how unauthenticated email (identified using SPF and DKIM) should be handled.

For important sites IMPORTANT low EFFORT

DNS Zone

The global DNS infrastructure is organized as a series of hierarchical DNS zones. The root zone hosts a number of global and country TLDs, which in turn host further zones that are delegated to their customers. Each organization that controls a zone can delegate parts of its namespace to other zones. In this test we perform detailed inspection of a DNS zone, but only if the host being tested matches the zone.

Test passed
Everything seems to be well configured. Well done.

Nameserver Names

Nameservers can be referred to by name and by address. In this section we show the names, which can appear in the NS records, the referrals from the parent zone, and the SOA record. In some situations, servers from the parent zone respond authoritatively, in which case we will include them in the list as well.

Nameserver Operational IPv4 IPv6 Sources
a1-243.akam.net.
193.108.91.243
2600:1401:2::f3
The server is online. Name resolves to an IPv4 address. Name resolves to an IPv6 address. REFERRAL NS
a10-64.akam.net.
96.7.50.64
2600:1480:d000::40
The server is online. Name resolves to an IPv4 address. Name resolves to an IPv6 address. REFERRAL NS
a12-67.akam.net.
184.26.160.67
2600:1480:f000::43
The server is online. Name resolves to an IPv4 address. Name resolves to an IPv6 address. REFERRAL NS
a13-65.akam.net.
2.22.230.65
2600:1480:800::41
The server is online. Name resolves to an IPv4 address. Name resolves to an IPv6 address. REFERRAL NS
a26-66.akam.net.
23.74.25.66
2600:1480:b800::42
The server is online. Name resolves to an IPv4 address. Name resolves to an IPv6 address. NS
a5-67.akam.net.
95.100.168.67
2600:1480:b000::43
The server is online. Name resolves to an IPv4 address. Name resolves to an IPv6 address. NS
ns1.f5clouddns.com.
107.162.234.197
2604:e180:1071::3:1
The server is online. Name resolves to an IPv4 address. Name resolves to an IPv6 address. REFERRAL NS
ns1.svb.nl. STEALTH PRIMARY
145.83.1.124
Nameservers present only in SOA records might not be publicly reachable. This is not unusual. Name resolves to an IPv4 address. Name doesn't resolve to an IPv6 address. SOA
ns2.f5clouddns.com.
107.162.176.221
2604:e180:1071::ffff:6ba2:b0dd
The server is online. Name resolves to an IPv4 address. Name resolves to an IPv6 address. REFERRAL NS

Nameserver Addresses

This section shows the configuration of all discovered nameservers by their IP address. To find all applicable nameservers, we inspect the parent zone nameservers for names and glue and then the tested zone nameservers for NS records. We then resolve all discovered names to IP addresses. Finally, we test each address individually.

Nameserver Operational Authoritative Recursive UDP TCP Sources Payload Size
107.162.176.221
ns2.f5clouddns.com.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 4096
107.162.234.197
ns1.f5clouddns.com.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 4096
145.83.1.124 STEALTH PRIMARY
ns1.svb.nl.
Nameservers present only in SOA records might not be publicly reachable. This is not unusual. Nameservers did not respond authoritatively to all queries Nameserver doesn't provide recursive service No response to UDP queries No response to TCP queries NAME -
184.26.160.67
a12-67.akam.net.
PTR: a12-67.akam.net.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 4096
193.108.91.243
a1-243.akam.net.
PTR: a1-243.akam.net.
PTR: ns1-243.akam.net.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 4096
2.22.230.65
a13-65.akam.net.
PTR: ns2-65.akam.net.
PTR: a13-65.akam.net.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 4096
23.74.25.66
a26-66.akam.net.
PTR: a26-66.akam.net.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 4096
95.100.168.67
a5-67.akam.net.
PTR: ns6-67.akam.net.
PTR: a5-67.akam.net.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 4096
96.7.50.64
a10-64.akam.net.
PTR: usc3.akam.net.
PTR: usw5.akam.net.
PTR: a10-64.akam.net.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 4096
2600:1401:2::f3
a1-243.akam.net.
PTR: ns1-243.akam.net.
PTR: a1-243.akam.net.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 4096
2600:1480:800::41
a13-65.akam.net.
PTR: ns2-65.akam.net.
PTR: a13-65.akam.net.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 4096
2600:1480:b000::43
a5-67.akam.net.
PTR: ns6-67.akam.net.
PTR: a5-67.akam.net.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 4096
2600:1480:b800::42
a26-66.akam.net.
PTR: a26-66.akam.net.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 4096
2600:1480:d000::40
a10-64.akam.net.
PTR: a10-64.akam.net.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 4096
2600:1480:f000::43
a12-67.akam.net.
PTR: a12-67.akam.net.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 4096
2604:e180:1071::3:1
ns1.f5clouddns.com.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 4096
2604:e180:1071::ffff:6ba2:b0dd
ns2.f5clouddns.com.
The server appears to be online. Nameserver provides authoritative responses Nameserver doesn't provide recursive service Nameserver responds to UDP queries Nameserver responds to TCP queries NAME 4096

Start of Authority (SOA) Record

Start of Authority (SOA) records contain administrative information pertaining to one DNS zone, especially the configuration that's used for zone transfers between the primary nameserver and the secondaries. Only one SOA record should exist, with all nameservers providing the same information.

The domain name of the primary nameserver for the zone. Also known as MNAME.Primary nameserver ns1.svb.nl.
Email address of the persons responsible for this zone. Also known as RNAME.Admin email ict\.verbindingen.svb.nl.
Zone serial or version number.Serial number 2012281800
The length of time secondary nameservers should wait before querying the primary for changes.Refresh interval 10,800 seconds (about 3 hours)
The length of time secondary nameservers should wait before querying an unresponsive primary again.Retry interval 3,600 seconds (about 1 hour)
The length of time after which secondary nameservers should stop responding to queries for a zone, assuming no updates were obtained from the primary.Expire interval 2,419,200 seconds (about 28 days)
TTL for purposes of negative response caching. Negative cache TTL 900 seconds (about 15 minutes)
Time To Live (TTL) indicates for how long a record remains valid. SOA record TTL 28,800 seconds (about 8 hours)

Analysis

Notice
Nameserver not in referrals
This nameserver appears in the NS records, but doesn't appear in any referrals from the parent zone nameservers.

Name: a26-66.akam.net.

Notice
Nameserver not in referrals
This nameserver appears in the NS records, but doesn't appear in any referrals from the parent zone nameservers.

Name: a5-67.akam.net.

Powerup!
Nameserver addresses should have reverse names
According to RFC 1912, having reverse DNS configuration in place for every nameserver is a best practice that maximizes the chances of correct DNS operation. Further, some anti-spam techniques use reverse name resolution to allow traffic.
Powerup!
Nameserver A and AAAA records should have matching reverse records
According to RFC 1912, nameserver's PTR records must match their A and AAAA records to ensure maximum interoperability.
Good
No problems detected with the zone configuration
Excellent. This DNS zone is in a good working order. No problems detected.

Backing DNS Queries

Below are all DNS queries we submitted during the zone inspection.

ID Server Transport Question Name Type Status

DNS Records

Correctly functioning name servers are necessary to hold and distribute information that's necessary for your domain name to operate correctly. Examples include converting names to IP addresses, determining where email should go, and so on. More recently, the DNS is being used to communicate email and other security policies.

Test passed, but there are warnings
Some aspect of your site's configuration require your attention.

DNS Records

These are the results of individual DNS queries against your nameserver for common resource record types.

Name TTL Type Data
svb.nl.     600 A 145.83.4.32            
www.svb.nl.     300 A 145.83.4.32            
svb.nl.     600 AAAA 2a07:3502:1191:0:0:0:0:10            
www.svb.nl.     300 AAAA 2a07:3502:1191:0:0:0:0:10            
svb.nl.     300 CAA 128 issue "digicert.com"            
svb.nl.     300 CAA 128 issue "pkioverheid.nl"            
svb.nl.     300 CAA 128 issue "letsencrypt.org"            
svb.nl.     300 CAA 128 iodef "mailto:soc@svb.nl"            
svb.nl.     300 CAA 128 issue "certsign.ro"            
svb.nl.     300 CAA 128 issue "kpn.com"            
svb.nl.     172800 DNSKEY 257 3 13 oPK1YNhf8eZHlb66IEPhYrzpKB3P5a2ArywWoQVJM3AAhbjxsUNAWosRi60rL9SWwX2X+2+XytN7d+vgpNj66Q==            
svb.nl.     172800 DNSKEY 256 3 13 iQGsRwc/TzT3iVPJ3quXdgT37VW3OyOCu2xBxFdOUVOwRwSr39IrjfS34rIryByi007RmZk8bjTqdLZPrsR6ag==            
svb.nl.     172800 DNSKEY 256 3 13 OnbFYiLZZHlAJICanXZhN6zxNMZ/POQgpBLvW6yXUq9dLvAFxX0fpL8cSYY5KGdtJLzryV7Ao6PRhi3v5f+D8Q==            
svb.nl.     172800 DNSKEY 256 3 13 A0nxz11URptSjf8h2/eLCm9d/aZW+PFc7RMLdGLOGK5QAg7jirDXfLTMY8fpZTreNTBlI5MoJulrZPFyhwSBrQ==            
svb.nl.     300 MX 10 svb-nl.l-v1.mx.microsoft.            
svb.nl.     28800 NS a10-64.akam.net.            
svb.nl.     28800 NS ns1.f5clouddns.com.            
svb.nl.     28800 NS a1-243.akam.net.            
svb.nl.     28800 NS a12-67.akam.net.            
svb.nl.     28800 NS a13-65.akam.net.            
svb.nl.     28800 NS a26-66.akam.net.            
svb.nl.     28800 NS a5-67.akam.net.            
svb.nl.     28800 NS ns2.f5clouddns.com.            
svb.nl.     28800 SOA ns1.svb.nl. ict\.verbindingen.svb.nl. 2012281800 10800 3600 2419200 900            
_sip._tls.svb.nl.     300 SRV 100 1 443 sipdir.online.lync.com.            
_sipfederationtls._tcp.svb.nl.     300 SRV 100 1 5061 sipfed.online.lync.com.            
svb.nl.     300 TXT "google-site-verification=r_npeoz1xhra9m2DWUfNwCh_PRLXUvJQR_ZRmtwhA64"            
svb.nl.     300 TXT "u67tqIVmiYlW6HjUaqVH+S7n4fUX/XPYO2AwmG1LnXOnPxK66GPqXbqih8OULIJWlVvS/tbdNc4vrTZljhjJyw=="            
svb.nl.     300 TXT "_6co7m11bldbimtv1o23rundhd8n69lm"            
svb.nl.     300 TXT "atlassian-domain-verification=lq8IV+4Fvtv6lJ2/Je1xgC6zeOVsReV156ZUu1njljYga3ah6xpTxOfnDA3BwXp2"            
svb.nl.     300 TXT "MS=B3BF4308CCD03255BB8A6045D86B8A4386CDD824"            
svb.nl.     300 TXT "google-site-verification=v5ThvyhKzotKBmjno8yGiIHcQCfwO19ISi1f4qFD6TI"            
svb.nl.     300 TXT "atlassian-sending-domain-verification=2c9063c7-998f-4349-bc7c-ab10ea79a91c"            
svb.nl.     300 TXT "atlassian-domain-verification=r6USLqbJWsWDNLIK7dmNDlaZ/azMyHw/bJzFSQYbwiHJTwlB9rmEijSgD1/Cxnb6"            
svb.nl.     300 TXT "_5j86qonkqcavcm3rac3josy8in0yopb"            
svb.nl.     300 TXT "v=spf1 include:spf.protection.outlook.com include:_spf.ezorg.nl include:spf.svb.nl.eu-pg7ngi0h.e1.dspf.app -all"            
svb.nl.     300 TXT "fa5f7c0a89c406e03527aaa4c0bf0853bacd17b16d4bab2155440d8bb932548c"            
svb.nl.     300 TXT "_szqeu1mq24mapfuyftmrexhe6ut2iue"            
svb.nl.     300 TXT "miro-verification=3051639a8c8c37c0e567ae79f32486268412804f"            
svb.nl.     300 TXT "QuoVadis=78706aaf-d9d7-4da4-b0f9-95bf808403c5"            
_dmarc.svb.nl.     900 TXT "v=DMARC1;p=reject;sp=reject;adkim=r;aspf=r;fo=0;rua=mailto:pg7ngi0h@ag.eu.dmarcadvisor.com;ruf=mailto:dmarc-ruf@svb.nl;rf=afrf;pct=100;ri=86400"            
_smtp._tls.svb.nl.     28800 TXT "v=TLSRPTv1; rua=mailto:pg7ngi0h@tls.eu.dmarcmanager.app;"            

Analysis

Warning
Dangling DNS configuration
We've detected a dangling DNS configuration that doesn't look serious. This problem most commonly occurs with CNAME records that point to another name that is subsequently deleted.

Error: Dangling DNS record: _sip._tls.svb.nl./SRV (destination: sipdir.online.lync.com.)

Backing DNS Queries

Below are all DNS queries we submitted while inspecting the resource records.

ID Server Question Name Type Status

DNSSEC

DNSSEC is an extension of the DNS protocol that provides cryptographic assurance of the authenticity and integrity of responses; it's intended as a defense against network attackers who are able to manipulate DNS to redirect their victims to servers of their choice. DNSSEC is controversial, with the industry split largely between those who think it's essential and those who believe that it's problematic and unnecessary.

Test passed
Everything seems to be well configured. Well done.

Analysis

Good
DNSSEC is well configured
Good. This domain name has well-configured DNSSEC.

Useful DNSSEC Tools

Certification Authority Authorization

CAA (RFC 8659) is a new standard that allows domain name owners to restrict which CAs are allowed to issue certificates for their domains. This can help to reduce the chance of misissuance, either accidentally or maliciously. In September 2017, CAA became mandatory for CAs to implement.

Test passed, but there are warnings
Some aspect of your site's configuration require your attention.

CAA Policy Information

The DNS hostname where this policy is located.Policy host svb.nl
The issue property tag is used to request that certificate
issuers perform CAA issue restriction processing for the domain
and to grant authorization to specific certificate issuers.
issue
certsign.ro  flags: 128 ; critical
The iodef property specifies a means of reporting certificate
issue requests or cases of certificate issue for the corresponding
domain that violate the security policy of the issuer or the domain
name holder.
iodef
mailto:soc@svb.nl  flags: 128 ; critical
The issue property tag is used to request that certificate
issuers perform CAA issue restriction processing for the domain
and to grant authorization to specific certificate issuers.
issue
letsencrypt.org  flags: 128 ; critical
The issue property tag is used to request that certificate
issuers perform CAA issue restriction processing for the domain
and to grant authorization to specific certificate issuers.
issue
digicert.com  flags: 128 ; critical
The issue property tag is used to request that certificate
issuers perform CAA issue restriction processing for the domain
and to grant authorization to specific certificate issuers.
issue
kpn.com  flags: 128 ; critical
The issue property tag is used to request that certificate
issuers perform CAA issue restriction processing for the domain
and to grant authorization to specific certificate issuers.
issue
pkioverheid.nl  flags: 128 ; critical

Analysis

Warning
Unknown CA domain
The CAA record policy includes a CA domain that is not recognized in the Common CA Database.

Unknown CA domains: [kpn.com, pkioverheid.nl]

Powerup!
Issuance of S/MIME certificates not restricted
This policy doesn't restrict the issuance of S/MIME certificates. Consider using the `issuemail` directive to restrict which CAs, if any, can issue.
Powerup!
Issuance of BIMI not restricted
This policy doesn't restrict issuance of BIMI certificates. Consider using the `issuevmc` directive to restrict which CAs, if any, can issue.
Good
CAA policy restricts issuance
Great. This domain name uses CAA to restrict which CAs are allowed to issue certificates for it.
Good
Policy uses reporting
Good. This policy uses reporting, which means that your contact information is available should someone need to contact you about a CAA violation. Do note that you're not guaranteed to be notified, given that CAs generally don't support notifications yet.

Email (SMTP)

An internet hostname can be served by zero or more mail servers, as specified by MX (mail exchange) DNS resource records. Each server can further resolve to multiple IP addresses, for example to handle IPv4 and IPv6 clients. Thus, in practice, hosts that wish to receive email reliably are supported by many endpoint.

Test passed
Everything seems to be well configured. Well done.
Server Preference Operational STARTTLS TLS PKI DNSSEC DANE
svb-nl.l-v1.mx.microsoft
52.101.68.12
PTR: mail-db9pr02cu00204.inbound.protection.outlook.com
10
220 DB1PEPF000509F9.mail.protection.outlook.com Microsoft ESMTP MAIL Service ready at Thu, 23 Apr 2026 09:13:04 +0000 [08DE9FCE7E82492D]
EHLO outbound.hardenize.com
250-DB1PEPF000509F9.mail.protection.outlook.com Hello [34.150.192.32]
250-SIZE 157286400
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-STARTTLS
250-8BITMIME
250-BINARYMIME
250-CHUNKING
250 SMTPUTF8
QUIT
221 2.0.0 Service closing transmission channel
Supports STARTTLS.

Analysis

Notice
Limited testing of third-party SMTP servers
We employ limited testing of third-party SMTP servers because they tend to be used by a great many domain names. Because we also continuously test a great many domain names, we want to avoid sending too many near-identical connections to these SMTP servers. It doesn't serve a practical purpose and also tends to get us on their bad side. TLS protocol testing, in particular, requires a lot of connections, which mean that we're often treated like spammers, even though we don't send any email. When testing third-party servers we may check only IP address per SMTP destination. When this is the case, the list of IP addresses shown here may not be complete. Further, in some situations with top services, we may show only the TLS configuration from a representative sample of their servers.

Email TLS (SMTP)

Transport Layer Security (TLS) is the most widely used encryption protocol on the Internet. In combination with valid certificates, servers can establish trusted communication channels even with users who have never visited them before. Network attackers can't uncover what is being communicated, even when they can see all the traffic.

Test passed
Everything seems to be well configured. Well done.

TLS Configuration: svb-nl.l-v1.mx.microsoft (52.101.68.12)

Encryption protocol version determines what features are
available for negotiation between client and server.
Supported protocols
TLS v1.3
TLS v1.2
Servers should always enforce their own cipher
suite preference, as that is the only approach
that guarantees that the best possible suite is
selected.
Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3
Server preference
Suite: TLS_AES_256_GCM_SHA384
Suite ID: 0x1302
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: secp384r1
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_AES_256_GCM_SHA384
 256 bits (ECDHE 384 bits)
Suite: TLS_AES_128_GCM_SHA256
Suite ID: 0x1301
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: secp256r1
Key exchange strength: EC secp256r1 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2
Server preference
Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0xc030
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (ECDHE 384 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0xc02f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC secp256r1 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
Suite ID: 0xc028
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
 256 bits (ECDHE 384 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0xc027
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp256r1 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
 128 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0xc014
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp384r1 (384 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
 256 bits (ECDHE 384 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0xc013
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: ECDHE_RSA
Key exchange strength: EC secp256r1 (256 bits)
Forward secrecy: Yes
PRF: SHA
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
 128 bits (ECDHE 256 bits)
Suite: TLS_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0x9d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA384
TLS_RSA_WITH_AES_256_GCM_SHA384
 256 bits
Suite: TLS_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0x9c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_GCM_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_256_CBC_SHA256
Suite ID: 0x3d
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_256_CBC_SHA256
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA256
Suite ID: 0x3c
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA256
TLS_RSA_WITH_AES_128_CBC_SHA256
 128 bits
Suite: TLS_RSA_WITH_AES_256_CBC_SHA
Suite ID: 0x35
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_256_CBC_SHA
 256 bits
Suite: TLS_RSA_WITH_AES_128_CBC_SHA
Suite ID: 0x2f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: CBC
Key exchange: RSA
Key exchange strength: 2048 bits
Forward secrecy: No (WEAK)
PRF: SHA
TLS_RSA_WITH_AES_128_CBC_SHA
 128 bits

Analysis

Good
TLS 1.2 supported
Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.
Good
Server enforces cipher suite preferences
Excellent. This server enforces server cipher suite preference, which means that it is able to select the best suite from the options submitted by clients. Combined with a well-designed list of supported cipher suites, this setting enables negotiation of best security.
Good
Strong key exchange detected
Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.
Good
Server prefers forward secrecy and authenticated encryption suites
Excellent. Not only does this server enforce its server preference, but it also has at the top of the list suites that support both forward secrecy and authenticated encryption. This is the best TLS 1.2 can offer.
Notice
Relaxed TLS assessment criteria applied to SMTP on port 25
We apply relaxed assessment criteria when evaluating TLS configuration of SMTP servers on port 25. This is because most delivery agents fall back to delivering via plaintext on failure to negotiate encryption. Some configuration elements that can be abused to attack other ports and protocols (e.g., SSLv2 and export cipher suites) are penalized in the same way as for other protocols. We will review this policy in the future.
Notice
DHE suites not supported
This server doesn't support the Diffie-Hellman (DH) key exchange.

Email Certificates (SMTP)

A certificate is a digital document that contains a public key, some information about the entity associated with it, and a digital signature from the certificate issuer. It’s a mechanism that enables us to exchange, store, and use public keys. Being able to reliably verify the identity of a remote server is crucial in order to achieve secure encrypted communication.

Test passed
Everything seems to be well configured. Well done.

Certificate #1

Leaf certificate mail.protection.outlook.com
Issuer: DigiCert
Not Before: 27 Aug 2025 00:00:00 UTC
Not After: 26 Aug 2026 23:59:59 UTC (expires in 4 months 3 days)
Key: RSA 2048 bits
Signature: SHA256withRSA
 View details

Analysis

Good
Strong private key
Good. The private key associated with this certificate is secure.
Good
Strong signature algorithm
Good. This certificate uses a strong signature algorithm.
Good
Certificate matches hostname
Good. The provided certificate matches the expected hostnames.
Good
Certificate dates match
Good. The certificate is valid for use at this point of time.
Good
Certificate has not been revoked
Good. This certificate has not been revoked.
Good
Certificate satisfies Apple's CT compliance requirements
Good. This certificate satisfies Apple's CT requirements at present.

Certificate Chain

Leaf certificate
mail.protection.outlook.com | 6492b2b
Not After: 26 Aug 2026 23:59:59 UTC (expires in 4 months 3 days)
Authentication: RSA 2048 bits (SHA256withRSA)
 View details
Intermediate certificate
DigiCert Cloud Services CA-1 | 5f88694
Not After: 24 Sep 2030 23:59:59 UTC (expires in 4 years 5 months)
Authentication: RSA 2048 bits (SHA256withRSA)
 View details
Root certificate
DigiCert Global Root CA | 4348a0e
Not After: 10 Nov 2031 00:00:00 UTC (expires in 5 years 6 months)
Authentication: RSA 2048 bits (SHA1withRSA)
 View details

Analysis

Good
Certificate chain is correct
Good. This chain contains all the right certificates and in the right order.

Email DANE (SMTP)

DNS-based Authentication of Named Entities (DANE) is a bridge between DNSSEC and TLS. In one possible scenario, DANE can be used for public key pinning, building on an existing publicly-trusted certificate. In another approach, it can be used to completely bypass the CA ecosystem and establish trust using DNSSEC alone.

Test passed
Everything seems to be well configured. Well done.

DANE: svb-nl.l-v1.mx.microsoft (52.101.68.12)

Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Trust anchor assertion / DANE-TA (2) Creates a pin for a trust anchor that must be
present in the certificate chain. PKIX validation is
performed, under the assumption that the pinned
anchor is trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
Certificate (0)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data 38d895f5105bc2545822c17a2444f4b0ea3d298d2c15a38296aa7295a3d85ce9
Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data c495d9e40f7e625be22f83cc64305182ab0fe74232de30db8b218d09650cb0ea

Leaf certificate: RSA 2048 bits
Subject: CN=mail.protection.outlook.com, O=Microsoft Corporation, L=Redmond, ST=Washington, C=US
Issuer: CN=DigiCert Cloud Services CA-1, O=DigiCert Inc, C=US
mail.protection.outlook.com (RSA 2048 bits)

Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Trust anchor assertion / DANE-TA (2) Creates a pin for a trust anchor that must be
present in the certificate chain. PKIX validation is
performed, under the assumption that the pinned
anchor is trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
Certificate (0)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data 6ebff927297a5b3aaf5eae672252c36a5158473fa5bbf0e29508d5528358f83b
Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data a6c267923b26a4a9617eda73d8db4fbcb0185d72f621b83b1d9076485a41a28d
Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Trust anchor assertion / DANE-TA (2) Creates a pin for a trust anchor that must be
present in the certificate chain. PKIX validation is
performed, under the assumption that the pinned
anchor is trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
Certificate (0)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data 5f88694615e4c61686e106b84c3338c6720c535f60d36f61282ed15e1977dd44

Root certificate: RSA 2048 bits
Subject: CN=DigiCert Cloud Services CA-1, O=DigiCert Inc, C=US
Issuer: CN=DigiCert Global Root CA, OU=www.digicert.com, O=DigiCert Inc, C=US
DigiCert Cloud Services CA-1 (RSA 2048 bits)

Specifies which certificate in the chain
is being pinned and how validation should
be performed.
Certificate Usage
Domain-issued certificate / DANE-EE (3) Creates a leaf pin for a certificate that must be
present in the certificate chain. PKIX validation is
not performed and the pinned certificate is assumed
to be trusted.
Determines if the association is made with
a certificate or with a public key (via
its SPKI structure).
Selector
SPKI structure (1)
Determines how matching is done; directly or via a hash. Matching Type SHA2-256 (1)
Contains the data necessary to perform the matching. Data 133086c7b822371a4a3304f1661a7880b908d9dae191e78259afa22fec2b4fc7

Analysis

Good
Valid DANE configuration
Excellent. Your DANE configuration matches the certificate chain(s) provided by the service. Your TLS configuration enjoys the additional benefit of DANE validation.

SPF

Sender Policy Framework (SPF) is a protocol that allows domain name owners to control which internet hosts are allowed to send email on their behalf. This simple mechanism can be used to reduce the effect of email spoofing and cut down on spam.

Test passed
Everything seems to be well configured. Well done.

SPF Policy Information Main policy

Host where this policy is located.Location svb.nl
SPF version used by this policy.v spf1
Evaluates SPF policy specified in another DNS location. This
directive is typically used to allow hosts controlled by
another organization.
include
spf.protection.outlook.com
Evaluates SPF policy specified in another DNS location. This
directive is typically used to allow hosts controlled by
another organization.
include
_spf.ezorg.nl
Evaluates SPF policy specified in another DNS location. This
directive is typically used to allow hosts controlled by
another organization.
include
spf.svb.nl.eu-pg7ngi0h.e1.dspf.app
This policy element always matches. It's normally used
at the end of a policy to specify the handling of hosts
that don't match earlier mechanisms.
-all

Analysis

Info
SPF policy found

Policy text: v=spf1 include:spf.protection.outlook.com include:_spf.ezorg.nl include:spf.svb.nl.eu-pg7ngi0h.e1.dspf.app -all

Location: svb.nl

Good
SPF policy is valid
Good. Your SPF policy is syntactically valid.
Good
Policy uses default fail
Excellent. This policy fails hosts that are not allowed to send email for this domain name.
Good
Policy DNS lookups under limit
Good. Your policy stays under the limit of up to 10 DNS queries. The SPF specification Section 4.6.4. requires implementations to limit the total number of DNS queries. Policies that exceed the limit should not be used and may not work in practice.

Lookups: 8

SPF Policy Information Included policy

Host where this policy is located.Location spf.protection.outlook.com
SPF version used by this policy.v spf1
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
40.92.0.0/15
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
40.107.0.0/16
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
52.100.0.0/15
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
52.102.0.0/16
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
52.103.0.0/17
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
104.47.0.0/17
This mechanism tests whether the IP address being
tested is contained within a given IPv6 network.
ip6
2a01:111:f400::/48
This mechanism tests whether the IP address being
tested is contained within a given IPv6 network.
ip6
2a01:111:f403::/49
This mechanism tests whether the IP address being
tested is contained within a given IPv6 network.
ip6
2a01:111:f403:8000::/51
This mechanism tests whether the IP address being
tested is contained within a given IPv6 network.
ip6
2a01:111:f403:c000::/51
This mechanism tests whether the IP address being
tested is contained within a given IPv6 network.
ip6
2a01:111:f403:f000::/52
This policy element always matches. It's normally used
at the end of a policy to specify the handling of hosts
that don't match earlier mechanisms.
-all

SPF Policy Information Included policy

Host where this policy is located.Location _spf.ezorg.nl
SPF version used by this policy.v spf1
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
37.9.216.32/27
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
37.9.216.92/30
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
37.9.218.8/29
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
77.87.58.4/31
This mechanism tests whether the IP address being
tested is contained within a given IPv6 network.
ip6
2a07:b701:0:50::/64
Evaluates SPF policy specified in another DNS location. This
directive is typically used to allow hosts controlled by
another organization.
include
_spf.relay.zorgmail.nl
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
195.88.137.114
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
195.88.137.208
This policy element always matches. It's normally used
at the end of a policy to specify the handling of hosts
that don't match earlier mechanisms.
-all

SPF Policy Information Included policy

Host where this policy is located.Location _spf.relay.zorgmail.nl
SPF version used by this policy.v spf1
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
92.42.235.0/24
This policy element always matches. It's normally used
at the end of a policy to specify the handling of hosts
that don't match earlier mechanisms.
-all

SPF Policy Information Included policy

Host where this policy is located.Location spf.svb.nl.eu-pg7ngi0h.e1.dspf.app
SPF version used by this policy.v spf1
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
40.92.0.0/15
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
52.100.0.0/15
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
148.105.0.0/16
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
40.107.0.0/16
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
52.102.0.0/16
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
104.47.0.0/17
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
52.103.0.0/17
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
198.2.128.0/18
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
205.201.128.0/20
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
204.220.160.0/21
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
87.253.232.0/21
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
143.55.236.0/22
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
161.38.204.0/22
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
185.189.236.0/22
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
185.211.120.0/22
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
185.250.236.0/22
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
198.244.60.0/22
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
141.193.32.0/23
Evaluates SPF policy specified in another DNS location. This
directive is typically used to allow hosts controlled by
another organization.
include
1.5mqoaes.eu-pg7ngi0h.e1.dspf.app
This policy element always matches. It's normally used
at the end of a policy to specify the handling of hosts
that don't match earlier mechanisms.
-all

SPF Policy Information Included policy

Host where this policy is located.Location 1.5mqoaes.eu-pg7ngi0h.e1.dspf.app
SPF version used by this policy.v spf1
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
188.94.184.0/23
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
161.51.101.0/24
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
188.241.247.0/24
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
193.160.154.0/24
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
45.152.251.0/24
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
91.247.184.0/24
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
92.42.235.0/24
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
159.135.132.128/25
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
37.9.216.32/27
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
159.135.140.80/29
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
207.97.204.96/29
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
37.9.218.8/29
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
146.20.14.104/30
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
164.177.132.168/30
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
37.9.216.92/30
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
50.56.130.220/31
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
77.87.58.4/31
Evaluates SPF policy specified in another DNS location. This
directive is typically used to allow hosts controlled by
another organization.
include
2.5mqoaes.eu-pg7ngi0h.e1.dspf.app
This policy element always matches. It's normally used
at the end of a policy to specify the handling of hosts
that don't match earlier mechanisms.
-all

SPF Policy Information Included policy

Host where this policy is located.Location 2.5mqoaes.eu-pg7ngi0h.e1.dspf.app
SPF version used by this policy.v spf1
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
129.158.56.255
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
129.158.62.153
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
129.80.145.156
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
129.80.64.36
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
140.238.148.191
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
141.148.55.217
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
141.148.91.244
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
143.47.120.152
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
145.83.1.4
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
145.83.2.4
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
147.181.10.36
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
147.181.6.194
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
150.136.21.199
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
151.145.38.14
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
155.248.220.138
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
155.248.234.149
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
155.248.237.141
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
163.192.125.176
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
163.192.196.146
Evaluates SPF policy specified in another DNS location. This
directive is typically used to allow hosts controlled by
another organization.
include
3.5mqoaes.eu-pg7ngi0h.e1.dspf.app
This policy element always matches. It's normally used
at the end of a policy to specify the handling of hosts
that don't match earlier mechanisms.
-all

SPF Policy Information Included policy

Host where this policy is located.Location 3.5mqoaes.eu-pg7ngi0h.e1.dspf.app
SPF version used by this policy.v spf1
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
163.192.204.161
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
167.89.13.189
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
168.138.77.31
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
168.245.120.180
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
170.9.232.254
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
185.14.185.8
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
188.226.155.4
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
192.18.145.36
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
192.18.152.58
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
194.150.14.85
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
195.143.61.129
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
195.28.22.97
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
195.88.137.114
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
195.88.137.208
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
40.233.64.216
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
40.233.83.78
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
40.233.88.28
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
50.56.130.222
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
77.74.54.216
Evaluates SPF policy specified in another DNS location. This
directive is typically used to allow hosts controlled by
another organization.
include
4.5mqoaes.eu-pg7ngi0h.e1.dspf.app
This policy element always matches. It's normally used
at the end of a policy to specify the handling of hosts
that don't match earlier mechanisms.
-all

SPF Policy Information Included policy

Host where this policy is located.Location 4.5mqoaes.eu-pg7ngi0h.e1.dspf.app
SPF version used by this policy.v spf1
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
77.74.54.242
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
77.74.54.75
This mechanism tests whether the IP address being
tested is contained within a given IPv4 network.
ip4
95.85.20.12
This mechanism tests whether the IP address being
tested is contained within a given IPv6 network.
ip6
2a01:310:8312:1035::75:0
This mechanism tests whether the IP address being
tested is contained within a given IPv6 network.
ip6
2a07:b440:163:1::59
This mechanism tests whether the IP address being
tested is contained within a given IPv6 network.
ip6
2a01:111:f400::/48
This mechanism tests whether the IP address being
tested is contained within a given IPv6 network.
ip6
2a01:111:f403::/49
This mechanism tests whether the IP address being
tested is contained within a given IPv6 network.
ip6
2a01:111:f403:8000::/51
This mechanism tests whether the IP address being
tested is contained within a given IPv6 network.
ip6
2a01:111:f403:c000::/51
This mechanism tests whether the IP address being
tested is contained within a given IPv6 network.
ip6
2a01:111:f403:f000::/52
This mechanism tests whether the IP address being
tested is contained within a given IPv6 network.
ip6
2a07:b701:0:50::/64
This policy element always matches. It's normally used
at the end of a policy to specify the handling of hosts
that don't match earlier mechanisms.
-all

DMARC

Domain-based Message Authentication, Reporting, and Conformance (DMARC) is a scalable mechanism by which a mail-originating organization can express domain-level policies and preferences for message validation, disposition, and reporting, that a mail-receiving organization can use to improve mail handling.

Test passed
Everything seems to be well configured. Well done.

DMARC Policy Information

The location from which we obtained this policy.Policy location _dmarc.svb.nl
DMARC version used by this policy.v DMARC1
Indicates the policy to be enacted by the receiver at
the request of the domain owner. Possible values are:
none, quarantine, and reject.
p
reject
Requested mail receiver policy for all subdomains.
Same format as for the p tag.
sp
reject
Indicates whether strict or relaxed DKIM
alignment mode is required.
adkim
r
Indicates whether strict or relaxed SPF
alignment mode is required.
aspf
r
Configures failure reporting.fo 0
Addresses to which aggregate feedback is to be sent.rua mailto:pg7ngi0h@ag.eu.dmarcadvisor.com
Addresses to which message-specific failure
information is to be reported.
ruf
mailto:dmarc-ruf@svb.nl
Specifies the format to be used when reporting failures.rf afrf
Percentage of messages from mail stream to
which the DMARC policy is to be applied.
pct
100
Interval between aggregate reports. Defaults to 86400.ri 86400

Analysis

Info
DMARC policy found

Policy: v=DMARC1;p=reject;sp=reject;adkim=r;aspf=r;fo=0;rua=mailto:pg7ngi0h@ag.eu.dmarcadvisor.com;ruf=mailto:dmarc-ruf@svb.nl;rf=afrf;pct=100;ri=86400

Host: _dmarc.svb.nl

Good
Valid external destination

Permission record location: svb.nl._report._dmarc.ag.eu.dmarcadvisor.com

External destination: mailto:pg7ngi0h@ag.eu.dmarcadvisor.com

Permission record contents: v=DMARC1;

Good
Policy is valid
Good. You have a valid DMARC policy.

MTA Strict Transport Security

SMTP Mail Transfer Agent Strict Transport Security (MTA-STS) is a mechanism enabling mail service providers to declare their ability to receive Transport Layer Security (TLS) secure SMTP connections, and to specify whether sending SMTP servers should refuse to deliver to MX hosts that do not offer TLS with a trusted server certificate.

Feature not applicable, not implemented, or disabled
Your server doesn't support this feature.

SMTP TLS Reporting

SMTP TLS Reporting (RFC 8460), or TLS-RPT for short, describes a reporting mechanism and format by which systems sending email can share statistics and specific information about potential failures with recipient domains. Recipient domains can then use this information to both detect potential attacks and diagnose unintentional misconfigurations. TLS-RPT can be used with DANE or MTA-STS.

Test passed
Everything seems to be well configured. Well done.

TLS-RPT Policy

Location from which we retrieved the policy indicator.Location _smtp._tls.svb.nl
TLS-RPT standard version used by this policy indicator.Version TLSRPTv1
Reporting endpoints specified in the policy.Reporting Endpoints mailto:pg7ngi0h@tls.eu.dmarcmanager.app

Analysis

Good
SMTP TLS-RPT policy valid
Good. Your TLS-RPT policy is valid. SMTP TLS Reporting is a young standard that is not yet widely supported, but support is probably going to increase over time.

HTTP (80)

To observe your HTTP implementation, we submit a request to the homepage of your site on port 80, follow all redirections (even when they take us to other domain names), and record the returned HTTP headers.

Test passed
Everything seems to be well configured. Well done.

URL: http://svb.nl/

1
http://svb.nl/
HTTP/1.1 301 Moved Permanently
2
https://svb.nl/
HTTP/1.1 302 Found
3
https://www.svb.nl/nl/
HTTP/1.1 200 OK

Analysis

Good
HTTP redirects to HTTPS
Good. This plaintext HTTP server redirects to HTTPS.

URL: http://www.svb.nl/

1
http://www.svb.nl/
HTTP/1.1 301 Moved Permanently
2
https://www.svb.nl/
HTTP/1.1 302 Found
3
https://www.svb.nl/nl/
HTTP/1.1 200 OK

Analysis

Good
HTTP redirects to HTTPS
Good. This plaintext HTTP server redirects to HTTPS.

HTTP (443)

To observe your HTTPS implementation, we submit a request to the homepage of your site on port 443, follow all redirections (even when they take us to other domain names), and record the returned HTTP headers. We use the most recent set of headers returned from the tested hostname for further tests such as HSTS and HPKP.

Test passed
Everything seems to be well configured. Well done.

URL: https://svb.nl/

1
https://svb.nl/
HTTP/1.1 302 Found
2
https://www.svb.nl/nl/
HTTP/1.1 200 OK

URL: https://www.svb.nl/

1
https://www.svb.nl/
HTTP/1.1 302 Found
2
https://www.svb.nl/nl/
HTTP/1.1 200 OK

WWW TLS

Transport Layer Security (TLS) is the most widely used encryption protocol on the Internet. In combination with valid certificates, servers can establish trusted communication channels even with users who have never visited them before. Network attackers can't uncover what is being communicated, even when they can see all the traffic.

Test passed
Everything seems to be well configured. Well done.

TLS Configuration: svb.nl (2a07:3502:1191:0:0:0:0:10)

Encryption protocol version determines what features are
available for negotiation between client and server.
Supported protocols
TLS v1.3
TLS v1.2
Servers should always enforce their own cipher
suite preference, as that is the only approach
that guarantees that the best possible suite is
selected.
Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3
Server preference
Suite: TLS_AES_256_GCM_SHA384
Suite ID: 0x1302
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_CHACHA20_POLY1305_SHA256
Suite ID: 0x1303
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_AES_128_GCM_SHA256
Suite ID: 0x1301
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2
Server preference
Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0xc030
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0xc02f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)

Analysis

Good
TLS 1.3 supported
Excellent. This server supports TLS 1.3, which is the latest revision of the TLS protocol and a significant improvement over earlier versions. Developed over a period of several years and extensively analyzed prior to the release, TLS 1.3 removed insecure features, and improved both security and performance.
Good
TLS 1.2 supported
Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.
Good
Deprecated protocols not supported
Excellent. This server doesn't support any of the deprecated protocol (TLS 1.1 and earlier).
Good
Strong key exchange detected
Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.
Good
Only strong suites supported
Excellent. This server supports only strong cipher suites, which use strong authenticated encryption and provide forward secrecy.
Good
All TLS connections with this server satisfy Apple's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Good
All TLS connections with this server satisfy Chrome's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Notice
DHE suites not supported
This server doesn't support the Diffie-Hellman (DH) key exchange.

TLS Configuration: www.svb.nl (2a07:3502:1191:0:0:0:0:10)

Encryption protocol version determines what features are
available for negotiation between client and server.
Supported protocols
TLS v1.3
TLS v1.2
Servers should always enforce their own cipher
suite preference, as that is the only approach
that guarantees that the best possible suite is
selected.
Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3
Server preference
Suite: TLS_AES_256_GCM_SHA384
Suite ID: 0x1302
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_CHACHA20_POLY1305_SHA256
Suite ID: 0x1303
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_AES_128_GCM_SHA256
Suite ID: 0x1301
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2
Server preference
Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0xc030
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0xc02f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)

Analysis

Good
TLS 1.3 supported
Excellent. This server supports TLS 1.3, which is the latest revision of the TLS protocol and a significant improvement over earlier versions. Developed over a period of several years and extensively analyzed prior to the release, TLS 1.3 removed insecure features, and improved both security and performance.
Good
TLS 1.2 supported
Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.
Good
Deprecated protocols not supported
Excellent. This server doesn't support any of the deprecated protocol (TLS 1.1 and earlier).
Good
Strong key exchange detected
Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.
Good
Only strong suites supported
Excellent. This server supports only strong cipher suites, which use strong authenticated encryption and provide forward secrecy.
Good
All TLS connections with this server satisfy Apple's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Good
All TLS connections with this server satisfy Chrome's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Notice
DHE suites not supported
This server doesn't support the Diffie-Hellman (DH) key exchange.

TLS Configuration: svb.nl (145.83.4.32)

Encryption protocol version determines what features are
available for negotiation between client and server.
Supported protocols
TLS v1.3
TLS v1.2
Servers should always enforce their own cipher
suite preference, as that is the only approach
that guarantees that the best possible suite is
selected.
Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3
Server preference
Suite: TLS_AES_256_GCM_SHA384
Suite ID: 0x1302
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_CHACHA20_POLY1305_SHA256
Suite ID: 0x1303
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_AES_128_GCM_SHA256
Suite ID: 0x1301
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2
Server preference
Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0xc030
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0xc02f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)

Analysis

Good
TLS 1.3 supported
Excellent. This server supports TLS 1.3, which is the latest revision of the TLS protocol and a significant improvement over earlier versions. Developed over a period of several years and extensively analyzed prior to the release, TLS 1.3 removed insecure features, and improved both security and performance.
Good
TLS 1.2 supported
Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.
Good
Deprecated protocols not supported
Excellent. This server doesn't support any of the deprecated protocol (TLS 1.1 and earlier).
Good
Strong key exchange detected
Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.
Good
Only strong suites supported
Excellent. This server supports only strong cipher suites, which use strong authenticated encryption and provide forward secrecy.
Good
All TLS connections with this server satisfy Apple's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Good
All TLS connections with this server satisfy Chrome's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Notice
DHE suites not supported
This server doesn't support the Diffie-Hellman (DH) key exchange.

TLS Configuration: www.svb.nl (145.83.4.32)

Encryption protocol version determines what features are
available for negotiation between client and server.
Supported protocols
TLS v1.3
TLS v1.2
Servers should always enforce their own cipher
suite preference, as that is the only approach
that guarantees that the best possible suite is
selected.
Server suite preference
Shows cipher suite configuration for this protocol version.TLS v1.3
Server preference
Suite: TLS_AES_256_GCM_SHA384
Suite ID: 0x1302
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_CHACHA20_POLY1305_SHA256
Suite ID: 0x1303
Cipher name: CHACHA20
Cipher strength: 256 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_CHACHA20_POLY1305_SHA256
 256 bits (ECDHE 256 bits)
Suite: TLS_AES_128_GCM_SHA256
Suite ID: 0x1301
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ecdh_x25519
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)
Shows cipher suite configuration for this protocol version.TLS v1.2
Server preference
Suite: TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
Suite ID: 0xc030
Cipher name: AES
Cipher strength: 256 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA384
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
 256 bits (ECDHE 256 bits)
Suite: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
Suite ID: 0xc02f
Cipher name: AES
Cipher strength: 128 bits
Cipher block size: 128 bits
Cipher mode: AEAD
Key exchange: ECDHE_RSA
Key exchange strength: EC ecdh_x25519 (256 bits)
Forward secrecy: Yes
PRF: SHA256
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
 128 bits (ECDHE 256 bits)

Analysis

Good
TLS 1.3 supported
Excellent. This server supports TLS 1.3, which is the latest revision of the TLS protocol and a significant improvement over earlier versions. Developed over a period of several years and extensively analyzed prior to the release, TLS 1.3 removed insecure features, and improved both security and performance.
Good
TLS 1.2 supported
Good. This server supports TLS 1.2, which can provide strong security when configured correctly. This version of the TLS protocol is necessary to provide good security with a wide range of clients that don't yet support TLS 1.3.
Good
Deprecated protocols not supported
Excellent. This server doesn't support any of the deprecated protocol (TLS 1.1 and earlier).
Good
Strong key exchange detected
Excellent. All cipher suites on this server rely on strong key exchange. The sweet spot is 2048 bits for DHE and 256 bits for ECDHE. Putting ECDHE suites first guarantees best security and best performance.
Good
Only strong suites supported
Excellent. This server supports only strong cipher suites, which use strong authenticated encryption and provide forward secrecy.
Good
All TLS connections with this server satisfy Apple's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Good
All TLS connections with this server satisfy Chrome's CT requirements
All TLS connections established with this server satisfy Chrome's CT requirements, using certificate, TLS extension, or OCSP response as SCT transport method.

SCT transports: CERT

Notice
DHE suites not supported
This server doesn't support the Diffie-Hellman (DH) key exchange.

WWW Certificates

A certificate is a digital document that contains a public key, some information about the entity associated with it, and a digital signature from the certificate issuer. It’s a mechanism that enables us to exchange, store, and use public keys. Being able to reliably verify the identity of a remote server is crucial in order to achieve secure encrypted communication.

Test failed
We've detected serious problems that require your immediate attention.

Certificate: www.svb.nl

Leaf certificate www.svb.nl
Issuer: DigiCert
Not Before: 19 Mar 2026 00:00:00 UTC
Not After: 30 Jun 2026 23:59:59 UTC (expires in 2 months 7 days)
Key: RSA 4096 bits
Signature: SHA256withRSA
 View details

Analysis

Good
Strong private key
Good. The private key associated with this certificate is secure.
Good
Strong signature algorithm
Good. This certificate uses a strong signature algorithm.
Good
Certificate matches hostname
Good. The provided certificate matches the expected hostnames.
Good
Certificate dates match
Good. The certificate is valid for use at this point of time.
Good
Certificate has not been revoked
Good. This certificate has not been revoked.
Good
Certificate satisfies Apple's CT compliance requirements
Good. This certificate satisfies Apple's CT requirements at present.
Error
Certificate not publicly trusted
This certificate is not trusted and can't be used on public web sites.

Certificate Trust

Determining whether a certificate is considered valid is a complicated process that depends on the exact configuration of the validating party. For trust to be established, the certificate must form a chain that ends with a trusted root. In this section we evaluate the server's certificate against major root stores.

Platform Trusted
Apple
Google AOSP
Microsoft
Mozilla

Certificate Chain

For a server certificate to be valid, it must be presented as part of a complete and valid certificate chain. The last certificate in the chain should be the root and is usually not included in the configuration.

Leaf certificate
www.svb.nl | 87e9961
Not After: 30 Jun 2026 23:59:59 UTC (expires in 2 months 7 days)
Authentication: RSA 4096 bits (SHA256withRSA)
 View details
Intermediate certificate
DigiCert G2 TLS EU RSA4096 SHA384 2022 CA1 | a4adfc2
Not After: 18 Sep 2032 23:59:59 UTC (expires in 6 years 4 months)
Authentication: RSA 4096 bits (SHA384withRSA)
 View details
Root certificate
DigiCert Global Root G2 | cb3ccbb
Not After: 15 Jan 2038 12:00:00 UTC (expires in 11 years 8 months)
Authentication: RSA 2048 bits (SHA256withRSA)
 View details

Analysis

Good
Certificate chain is correct
Good. This chain contains all the right certificates and in the right order.

Certificate: svb.nl

Leaf certificate www.svb.nl
Issuer: DigiCert
Not Before: 19 Mar 2026 00:00:00 UTC
Not After: 30 Jun 2026 23:59:59 UTC (expires in 2 months 7 days)
Key: RSA 4096 bits
Signature: SHA256withRSA
 View details

Analysis

Good
Strong private key
Good. The private key associated with this certificate is secure.
Good
Strong signature algorithm
Good. This certificate uses a strong signature algorithm.
Good
Certificate matches hostname
Good. The provided certificate matches the expected hostnames.
Good
Certificate dates match
Good. The certificate is valid for use at this point of time.
Good
Certificate has not been revoked
Good. This certificate has not been revoked.
Good
Certificate satisfies Apple's CT compliance requirements
Good. This certificate satisfies Apple's CT requirements at present.
Error
Certificate not publicly trusted
This certificate is not trusted and can't be used on public web sites.

Certificate Trust

Determining whether a certificate is considered valid is a complicated process that depends on the exact configuration of the validating party. For trust to be established, the certificate must form a chain that ends with a trusted root. In this section we evaluate the server's certificate against major root stores.

Platform Trusted
Apple
Google AOSP
Microsoft
Mozilla

Certificate Chain

For a server certificate to be valid, it must be presented as part of a complete and valid certificate chain. The last certificate in the chain should be the root and is usually not included in the configuration.

Leaf certificate
www.svb.nl | 87e9961
Not After: 30 Jun 2026 23:59:59 UTC (expires in 2 months 7 days)
Authentication: RSA 4096 bits (SHA256withRSA)
 View details
Intermediate certificate
DigiCert G2 TLS EU RSA4096 SHA384 2022 CA1 | a4adfc2
Not After: 18 Sep 2032 23:59:59 UTC (expires in 6 years 4 months)
Authentication: RSA 4096 bits (SHA384withRSA)
 View details
Root certificate
DigiCert Global Root G2 | cb3ccbb
Not After: 15 Jan 2038 12:00:00 UTC (expires in 11 years 8 months)
Authentication: RSA 2048 bits (SHA256withRSA)
 View details

Analysis

Good
Certificate chain is correct
Good. This chain contains all the right certificates and in the right order.

DANE (443)

DNS-based Authentication of Named Entities (DANE) is a bridge between DNSSEC and TLS. In one possible scenario, DANE can be used for public key pinning, building on an existing publicly-trusted certificate. In another approach, it can be used to completely bypass the CA ecosystem and establish trust using DNSSEC alone.

Feature not applicable, not implemented, or disabled
Your server doesn't support this feature.

Cookies

Cookies are small chunks of text that are sent between your browser and a website. They are often essential to the operation of the site and sometimes contain sensitive information. Session cookies sent from secure sites must be explicitly marked as secure to prevent being obtained by active network attackers.

Test passed
Everything seems to be well configured. Well done.

HTTP Cookie: dtCookie

Cookie value. As far as the cookie RFC is concerned, the value
is an opaque string which only the application should interpret.
Value
v_4_srv_9_sn_BF0B2D63DF9D4B537B2247D510C0FA32_perc_100000_ol_0_mul_1_app-3A1dd8d3b7c79dfa9c_1
Cookie domain. When domain is implied (not explicitly set in a cookie),
most browsers (but not IE) treat the cookie as host-only, meaning that
no other server can overwrite it.
Domain
svb.org
Cookie path. This field can't be used as security measure,
but it could be of use to avoid cookie name collision
in non-adversarial contexts.
Path
/
The HttpOnly flag prevents the cookie from being accessed
from JavaScript, thus making them more difficult
to obtain after a successful XSS attack.
HttpOnly
The Secure flag signals to browsers that the cookie
should be transmitted only over an encrypted channel.
Secure
Normally, when a browser makes a request to a web site,
it sends all associated cookies. This is not always
desirable, because it might allow third-party sites
to perform site actions under the identity of the user.
This attack is known as Cross-Site Request Forgery.
With SameSite cookies (still in development, but already
supported in some browsers), you can choose to be more
strict. The possible values are 'lax' and 'strict'.
SameSite

Analysis

Good
Cookie is secure
Good. This cookie is marked secure, which means that it won't ever be transmitted over plaintext. As such, it's not vulnerable to the Sidejacking attack.

Analysis

Good
All cookies are secure
Great. All observed cookies are marked secure.

HTML Content

On virtually all web sites, HTML markup, images, style sheets, JavaScript, and other page resources arrive not only over multiple connections but possibly from multiple servers and sites spread across the entire Internet. For a page to be properly encrypted, it’s necessary that all the content is retrieved over HTTPS. In practice, that’s very often not the case, leading to mixed content security problems.

Test passed
Everything seems to be well configured. Well done.

Encryption of Embedded Resources

In this section we look at the transport security of all embedded resources. Mixed active content occurs when there are unprotected scripts or styles embedded in a page. This is typically not allowed by modern browsers. Mixed passive content (images, videos and such) are typically allowed, but shouldn't be present.

3 script(s)
  3 out of 3 are secure  View all
1 CSS file(s)
  1 out of 1 are secure  View all
6 media file(s)
  6 out of 6 are secure  View all

Encryption of Outbound Links

Ideally, an encrypted page should only have links that lead to other encrypted pages. If plaintext links are used, passive network attackers can see where people go after they visit your web site. It's also possible that some sensitive information is leaked in the Referer header.

1 link(s)
  1 out of 1 are encrypted  View all

HTTP Strict Transport Security

HTTP Strict Transport Security (HSTS) vastly improves security of the network encryption layer. With HSTS enabled, browsers no longer allow clicking through certificate warnings errors, which are typically trivial to exploit. Additionally, they will no longer submit insecure (plaintext) requests to the site in question, even if asked.

Test passed, but there are warnings
Some aspect of your site's configuration require your attention.

HSTS Policy  Main host

URL from which this policy was obtained.Location https://www.svb.nl/
Specifies policy duration. Once activated, HSTS stays in force
until this time lapses. Browsers update policy cache duration
every time they receive a new HSTS header from a site.
max‑age
31,536,000 seconds (about 1 year)
When present, this directive forces HSTS activation
on allsubdomains. For best security, HSTS should be
deployed on the bare domain name (e.g., example.com)
and all its subdomains.
includeSubDomains
Presence of this directive indicates that a web site wishes to
permanently use HSTS and that its policy information should be
preloaded (embedded in browsers).
preload

Analysis

Good
Policy is valid
OK. Your HSTS policy uses correct syntax.
Good
Long policy age
Your HSTS policy has a long max-age value, which offers better protection.
Good
Policy covers subdomains
When subdomains are included, network attackers are unable to manufacture arbitrary subdomains to manipulate cookies and trick users.
Notice
Preload directive has no effect here
This policy doesn't enable preloading, but that's all right. The preload directive doesn't have any effect unless it's used on an apex hostname.
Warning
HSTS won't activate because cert(s) not trusted
This server appears to be deploying HSTS with one or more certificates that are not publicly trusted. Under these circumstances, browsers will ignore the HSTS configuration.

Location: www.svb.nl

Good
Redirection from HTTP to HTTPS to the same host
Good. The redirection from HTTP to HTTPS is to the same host. This approach ensures that HSTS is activated on the hostname when it's accessed via plaintext.

HSTS Policy  Apex host

URL from which this policy was obtained.Location https://svb.nl/
Specifies policy duration. Once activated, HSTS stays in force
until this time lapses. Browsers update policy cache duration
every time they receive a new HSTS header from a site.
max‑age
31,536,000 seconds (about 1 year)
When present, this directive forces HSTS activation
on allsubdomains. For best security, HSTS should be
deployed on the bare domain name (e.g., example.com)
and all its subdomains.
includeSubDomains
Presence of this directive indicates that a web site wishes to
permanently use HSTS and that its policy information should be
preloaded (embedded in browsers).
preload

Analysis

Good
Policy is valid
OK. Your HSTS policy uses correct syntax.
Good
Long policy age
Your HSTS policy has a long max-age value, which offers better protection.
Good
Policy covers subdomains
When subdomains are included, network attackers are unable to manufacture arbitrary subdomains to manipulate cookies and trick users.
Powerup!
Preloading not enabled
This policy doesn't give browsers permission to embed it and provide protection even to the first request to the web site. Sites that wish to use preloading can apply at hstspreload.org.
Warning
HSTS won't activate because cert(s) not trusted
This server appears to be deploying HSTS with one or more certificates that are not publicly trusted. Under these circumstances, browsers will ignore the HSTS configuration.

Location: svb.nl

Good
Redirection from HTTP to HTTPS to the same host
Good. The redirection from HTTP to HTTPS is to the same host. This approach ensures that HSTS is activated on the hostname when it's accessed via plaintext.

HTTP Public Key Pinning

HTTP Public Key Pinning (HPKP) enables site operators to restrict which certificates are considered valid for their domain names. With a valid HPKP configuration, sites can defeat man in the middle (MITM) attacks using fraudulent or misissued certificates. HPKP is an advanced feature, suitable for use by only high-profile web sites.

Feature not applicable, not implemented, or disabled
Your server doesn't support this feature.

Content Security Policy

Content Security Policy (CSP) is a security mechanism that allows web sites control how browsers process their pages. In essence, sites can restrict what types of resources are loaded and from where. CSP policies can be used to defend against cross-site scripting, prevent mixed content issues, as well as report violations for investigation.

Test passed
Everything seems to be well configured. Well done.

content-security-policy

frame-ancestors 'self'  

Analysis

Powerup!
Mixed content not blocked
This CSP policy doesn't use any of the directives designed to handle mixed content. Consider using the 'block-all-mixed-content' and 'upgrade-insecure-requests' directives as appropriate to ensure that no mixed content is allowed.
Powerup!
Form targets not restricted
The 'form-action' directive is not explicitly set. Because this directive doesn't fall back to default sources, this means that all targets are allowed.

Analysis

Info
CSP policy detected

Header: content-security-policy

Value: frame-ancestors 'self';

Location: https://www.svb.nl/nl/

Subresource Integrity

Subresource Integrity (SRI) is a new standard that enables browsers to verify the integrity of embedded page resources (e.g., scripts and stylesheets) when they are loaded from third-party web sites. With SRI deployed, remote resources can be used safely, without fear of them being modified by malicious parties.

Feature not applicable, not implemented, or disabled
Your server doesn't support this feature.
3 script(s)
  2 out of 3 are secure
https://try.abtasty.com/...c331f1828fa2addc7.js
 View all
1 CSS file(s)
  1 out of 1 are secure  View all

Analysis

Powerup!
SRI required
This page contains remote resources that are under the control of third parties. Deploy SRI to protect them from modification.

Expect CT

Expect-CT is a deprecated response HTTP header designed to enable web sites to monitor problems related to their Certificate Transparency (CT) compliance. Should any CT issues arise, browsers that supported this header will submit reports to the specified reporting endpoint. Chrome was the browser that introduced support for this response header, but later deprecated it and removed it in version 107.

Feature not applicable, not implemented, or disabled
Your server doesn't support this feature.

Analysis

Powerup!
Deploy Expect-CT to enable reporting
An Expect-CT policy enables web sites to monitor for any problems related to their Expect-CT compliance, detecting potentially serious issues quickly. When issues arise, compliant browsers will submit reports to the specified reporting endpoints. Before CT became required for all public certificates the Expect-CT was also used to require CT, but that use case no longer applies.

Frame Options

The X-Frame-Options header controls page framing, which occurs when a page is incorporated into some other page, possibly on a different site. If framing is allowed, attackers can employ clever tricks to make victims perform arbitrary actions on your site; they do this by showing their web site while forwarding the victim's clicks to yours.

Test passed
Everything seems to be well configured. Well done.

Analysis

Info
Header information

Name: x-frame-options

Value: SAMEORIGIN

Good
Framing allowed from the same origin only
OK. Your site allows page framing only from itself. This should generally be safe, except maybe on sites that host user content.

XSS Protection

Some browsers ship with so-called XSS Auditors, built-in defenses against XSS. Although these defenses work against simple reflective XSS attacks, they can be abused by skillful attackers to add weaknesses to otherwise secure web sites. These dangers are present in both filtering and blocking modes. At this time, the Safari browser ships with its XSS defenses enabled by default. For this reason, the best approach is to explicitly disable this functionality.

Test passed, but there are warnings
Some aspect of your site's configuration require your attention.

Analysis

Info
Header information

Name: x-xss-protection

Value: 1; mode=block

Warning
XSS auditor blocking is dangerous
Your configuration requests blocking when XSS attacks are detected, which is potentially dangerous as it allows attackers to selectively disable portions of JavaScript code. The only safe approach is to explicitly disable browser-based XSS protection.

Content Type Options

Some browsers use a technique called content sniffing to override response MIME types provided by HTTP servers and interpret responses as something else (usually HTML). This behavior, which could potentially lead to security issues, should be disabled by attaching an X-Content-Type-Options header to all responses.

Test passed
Everything seems to be well configured. Well done.

Analysis

Info
Header information

Name: x-content-type-options

Value: nosniff

Good
Valid configuration
Good. Your configuration is valid. This means that browsers won't try to guess file MIME type on this web site.