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dnb.nl

Checked 2026-10-21 21:15 UTC · first added 2026-10-21
!Check could not complete

Domain & DNS

error

27 passed 2 warn 0 failed 1 errors

lookups failed for rdap; results are incomplete

Areas

iRegistration iDelegation !Nameservers ✓SOA ✓DNSSEC !Records

Problems

  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: a1-13.akam.net: "41824.7"; a1-13.akam.net: "41824.8"; a18-66.akam.net: "48878.27"; a18-66.akam.net: "48878.33"; a24-67.akam.net: "48878.26"; a24-67.akam.net: "48878.29"; a26-64.akam.net: "48878.26"; a26-64.akam.net: "48878.31"; a3-67.akam.net: "41824.7"; a3-67.akam.net: "41824.11"; a5-64.akam.net: "41824.6"; a5-64.akam.net: "41824.7". Hide or replace the version string.
    #17
  • !
    Very low TTLs
    Records · These records have a TTL below 5m, causing extra queries and slower lookups: A (20s), AAAA (20s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1h and in the zone 1d; resolvers may use either.
    #32

Recent checks

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Full report

Domain & DNS report for dnb.nl ›

Mail

warn

28 passed 4 warn 0 failed

Areas

✓SPF !DMARC ✓DKIM !DNSSEC ✓MX !TLS iBIMI

Problems

  • !
    Policy: quarantine
    DMARC · DMARC policy is set to 'quarantine'. Consider upgrading to 'reject' for stronger protection once you've verified legitimate emails are passing authentication.
    #4
  • !
    Signatures expire in 51h0m0s
    DNSSEC · DNSKEY signatures expire at 2026-10-24T00:43:13Z (in 51h0m0s). Check that re-signing works.
    #21
  • !
    Not configured
    TLS · MTA-STS is not configured, so other mail servers fall back to unencrypted delivery when TLS fails or is stripped by an attacker. Publish a _mta-sts TXT record and a policy at https://mta-sts.<domain>/.well-known/mta-sts.txt.
    #32
  • !
    Not configured
    TLS · MTA-STS or DANE is used without TLS-RPT, so you get no reports when senders fail to deliver because of TLS problems. Publish _smtp._tls TXT "v=TLSRPTv1; rua=mailto:...".
    #35

Recent checks

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Full report

Mail report for dnb.nl ›