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nbcnews.com

Checked 2026-10-22 10:01 UTC · first added 2026-10-21
!Check could not complete

Domain & DNS

warn

24 passed 4 warn 0 failed

Areas

iRegistration !Delegation !Nameservers ✓SOA !DNSSEC !Records

Problems

  • !
    No IPv6
    Delegation · None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13
  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: nsa1.nbcnews.com: "9.18.28"; nsa2.nbcnews.com: "9.18.28"; nsa3.nbcnews.com: "9.18.28"; nsa4.nbcnews.com: "9.18.28"; nsa5.nbcnews.com: "9.18.28"; nsa6.nbcnews.com: "9.18.28". Hide or replace the version string.
    #17
  • !
    Not signed
    DNSSEC · The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27
  • !
    Very low TTLs
    Records · These records have a TTL below 5m, causing extra queries and slower lookups: A (3m), MX (1m39s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 5m; resolvers may use either.
    #32

Recent checks

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Full report

Domain & DNS report for nbcnews.com ›

Mail

error

20 passed 3 warn 1 failed 1 errors

lookups failed for dnssec; results are incomplete

Areas

✓SPF ✗DMARC !DKIM iDNSSEC !MX !TLS iBIMI

Problems

  • ✗
    Policy: none (monitoring only)
    DMARC · DMARC policy is set to 'none', which only monitors but doesn't protect against spoofing. Consider upgrading to 'quarantine' or ideally 'reject'.
    #4
  • !
    No key under common selectors
    DKIM · The _domainkey name exists but no DKIM key was found under the common selectors. Selectors are provider-specific; check yours with -selector.
    #7
  • !
    Hosts without IPv6
    MX · The following MX hosts could not be resolved to IPv6 addresses: mxa-00176a04.gslb.pphosted.com, mxb-00176a04.gslb.pphosted.com, mx0a-00176a04.pphosted.com, mx0b-00176a04.pphosted.com
    #11
  • !
    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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Full report

Mail report for nbcnews.com ›