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opentable.com

Checked 2026-10-22 10:10 UTC · first added 2026-10-21
✗Problems found Score 69 of 100

Domain & DNS

warn

24 passed 4 warn 0 failed

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: a1-93.akam.net: "41824.5"; a11-66.akam.net: "41824.9"; a11-66.akam.net: "41824.4"; a12-67.akam.net: "48878.33"; a12-67.akam.net: "48878.26"; a13-64.akam.net: "41824.6"; a13-64.akam.net: "41824.11"; a28-65.akam.net: "48878.27"; a28-65.akam.net: "48878.26". Hide or replace the version string.
    #17
  • !
    Unusual SOA timers
    SOA · expire 45m is shorter than 7d; secondaries stop answering too soon when the primary is down; expire 45m must be longer than refresh + retry. Current values: refresh 30m, retry 15m, expire 45m, negative TTL 30m.
    #23
  • !
    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 (20s), AAAA (20s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 1h; resolvers may use either.
    #32

Recent checks

!

Full report

Domain & DNS report for opentable.com ›

Mail

fail

27 passed 3 warn 1 failed

Areas

✓SPF ✓DMARC ✗DKIM !DNSSEC !MX !TLS ✓BIMI

Problems

  • ✗
    Weak DKIM key
    DKIM · RSA keys shorter than 1024 bits can be cracked and are ignored by receivers (RFC 8301): pm (768 bits). Rotate to a 2048-bit key.
    #23
  • !
    Not enabled
    DNSSEC · DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.
    #8
  • !
    Hosts without IPv6
    MX · The following MX hosts could not be resolved to IPv6 addresses: mxa-009e5201.gslb.pphosted.com, mxb-009e5201.gslb.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

✗

Full report

Mail report for opentable.com ›