SurfaceMap › z › zuidas.nl

zuidas.nl

Checked 2026-10-22 17:31 UTC · first added 2026-10-21
!Check could not complete

Domain & DNS

error

25 passed 2 warn 0 failed 1 errors

lookups failed for rdap; results are incomplete

Areas

iRegistration iDelegation !Nameservers ✓SOA !DNSSEC iRecords

Problems

  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: a1-140.akam.net: "41824.9"; a1-140.akam.net: "41824.5"; a11-64.akam.net: "41824.10"; a11-64.akam.net: "41824.11"; a12-67.akam.net: "48878.32"; a12-67.akam.net: "48878.29"; a26-65.akam.net: "48878.27"; a26-65.akam.net: "48878.30"; a5-65.akam.net: "41824.5"; a5-65.akam.net: "41824.4"; a6-64.akam.net: "48878.33"; a6-64.akam.net: "48878.26". Hide or replace the version string.
    #17
  • !
    Signed but not delegated securely
    DNSSEC · The zone is signed but the parent has no DS record, so the signatures are not used. Publish the DS record at your registrar.
    #27

Recent checks

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Full report

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Mail

warn

25 passed 5 warn 0 failed

Areas

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

Problems

  • !
    Signed, but no DS at parent
    DNSSEC · The zone is signed (DNSKEY present) but the parent has no DS record, so the chain of trust is incomplete. Publish the DS record at your registrar.
    #8
  • !
    Single MX host, no backup
    MX · Only one MX record found. For better email reliability, consider adding at least one backup MX server.
    #12
  • !
    Signatures expire in 68h0m0s
    DNSSEC · DNSKEY signatures expire at 2026-10-25T13:08:02Z (in 68h0m0s). Check that re-signing works.
    #21
  • !
    1024-bit DKIM key
    DKIM · 1024-bit RSA keys are the minimum and are considered weak today: s2 (1024 bits). Rotate to a 2048-bit key.
    #23
  • !
    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

Recent checks

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