tirerack.com

Checked 22 October 2026, 11:10 UTC · via 8.8.8.8
!Passed with warnings
24 passed 3 warnings 0 failed 4 info

Registration

info

.com generic · Network Solutions, LLC · expires 2029-05-03

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Network Solutions, LLC
Registered
2 May 1996
Last changed
16 June 2026
Expires
3 May 2029
Status
client transfer prohibited
Registry nameservers
a1-145.akam.net, a16-66.akam.net, a20-67.akam.net, a4-64.akam.net, a5-65.akam.net, a7-66.akam.net
RDAP server
https://rdap.verisign.com/com/v1/

Checks

  • i
    .com is a generic TLD (gTLD)
    Generic TLD under an ICANN registry agreement: ICANN-accredited registrars, UDRP and RDAP apply.
    #1
  • ✓ TLD delegated and signed #2
    .com is delegated in the root zone and DNSSEC-signed.
  • ✓ Expires on 2029-05-03 #3
    The registration is valid until 2029-05-03 (923 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

a1-145.akam.net, a16-66.akam.net, a20-67.akam.net, a4-64.akam.net, a5-65.akam.net, a7-66.akam.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a1-145.akam.net, a16-66.akam.net, a20-67.akam.net, a4-64.akam.net, a5-65.akam.net, a7-66.akam.net
NS in the zone
a1-145.akam.net, a16-66.akam.net, a20-67.akam.net, a4-64.akam.net, a5-65.akam.net, a7-66.akam.net
NameserverAddressesNetwork (AS)Glue
a1-145.akam.net193.108.91.145 2600:1401:2::91AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a16-66.akam.net23.211.132.66 2600:1406:1b::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a20-67.akam.net95.100.175.67 2a02:26f0:67::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a4-64.akam.net72.246.46.64 2600:1480:9000::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a5-65.akam.net95.100.168.65 2600:1480:b000::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a7-66.akam.net23.61.199.66 2600:1406:32::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-145.akam.net, a16-66.akam.net, a20-67.akam.net, a4-64.akam.net, a5-65.akam.net, a7-66.akam.net.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ No glue needed #8
    All nameservers are outside the zone, so no glue records are needed.
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 6 IPv4 /24s and 6 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 12 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • i
    All nameserver names under .net
    All nameserver names are under one TLD, so a problem with that TLD also makes the nameservers unreachable. Some operators use names under two TLDs for extra resilience.
    #12
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a1-145.akam.net 193.108.91.145NOERROR, 3 ms, authoritativenoyes / yesrefused41824.11
a1-145.akam.net 2600:1401:2::91NOERROR, 3 ms, authoritativenoyes / yesrefused41824.4
a16-66.akam.net 23.211.132.66NOERROR, 3 ms, authoritativenoyes / yesrefused48878.30
a16-66.akam.net 2600:1406:1b::42NOERROR, 4 ms, authoritativenoyes / yesrefused48878.32
a20-67.akam.net 95.100.175.67NOERROR, 3 ms, authoritativenoyes / yesrefused48878.31
a20-67.akam.net 2a02:26f0:67::43NOERROR, 4 ms, authoritativenoyes / yesrefused48878.26
a4-64.akam.net 72.246.46.64NOERROR, 4 ms, authoritativenoyes / yesrefused48878.32
a4-64.akam.net 2600:1480:9000::40NOERROR, 4 ms, authoritativenoyes / yesrefused48878.30
a5-65.akam.net 95.100.168.65NOERROR, 3 ms, authoritativenoyes / yesrefused41824.5
a5-65.akam.net 2600:1480:b000::41NOERROR, 3 ms, authoritativenoyes / yesrefused41824.6
a7-66.akam.net 23.61.199.66NOERROR, 4 ms, authoritativenoyes / yesrefused41824.4
a7-66.akam.net 2600:1406:32::42NOERROR, 3 ms, authoritativenoyes / yesrefused41824.11

Checks

  • ✓ All respond #14
    All 12 nameserver addresses answered.
  • ✓ All authoritative #15
    Every responding nameserver answers authoritatively for the zone.
  • ✓ No recursion #16
    The nameservers do not answer recursive queries for other domains.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: a1-145.akam.net: "41824.11"; a1-145.akam.net: "41824.4"; a16-66.akam.net: "48878.30"; a16-66.akam.net: "48878.32"; a20-67.akam.net: "48878.31"; a20-67.akam.net: "48878.26"; a4-64.akam.net: "48878.32"; a4-64.akam.net: "48878.30"; a5-65.akam.net: "41824.5"; a5-65.akam.net: "41824.6"; a7-66.akam.net: "41824.4"; a7-66.akam.net: "41824.11". Hide or replace the version string.
    #17
  • ✓ Zone transfers refused #18
    No nameserver allows a zone transfer to the public.
  • ✓ TCP supported #19
    All nameservers answer over TCP.
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

pass

serial 2016118838 · primary a1-145.akam.net

Found

Primary (MNAME)
a1-145.akam.net
Contact (RNAME)
hostmaster.akamai.com
Serial
2016118838
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
a1-145.akam.net (193.108.91.145)2016118838
a1-145.akam.net (2600:1401:2::91)2016118838
a16-66.akam.net (23.211.132.66)2016118838
a16-66.akam.net (2600:1406:1b::42)2016118838
a20-67.akam.net (95.100.175.67)2016118838
a20-67.akam.net (2a02:26f0:67::43)2016118838
a4-64.akam.net (72.246.46.64)2016118838
a4-64.akam.net (2600:1480:9000::40)2016118838
a5-65.akam.net (95.100.168.65)2016118838
a5-65.akam.net (2600:1480:b000::41)2016118838
a7-66.akam.net (23.61.199.66)2016118838
a7-66.akam.net (2600:1406:32::42)2016118838

Checks

  • ✓ Serial 2016118838 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver a1-145.akam.net is one of the listed nameservers.
  • ✓ Contact hostmaster@akamai.com #25
    The SOA RNAME hostmaster.akamai.com means hostmaster@akamai.com.
  • ✓ Timestamp serial #26
    The serial 2016118838 is a Unix timestamp (2033-11-20 17:00 UTC).

DNSSEC

warn

Not signed

Found

Validated by resolver
no

Checks

  • !
    Not signed
    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

Records

warn

33 records at the apex

Found

Read from
193.108.91.145:53
TypeValueTTL
SOAa1-145.akam.net. hostmaster.akamai.com. 2016118838 10800 3600 604800 36003600
NSa4-64.akam.net.3600
NSa20-67.akam.net.3600
NSa16-66.akam.net.3600
NSa5-65.akam.net.3600
NSa1-145.akam.net.3600
NSa7-66.akam.net.3600
A2.16.204.820
A2.16.204.1120
AAAA2a02:26f0:b700:4::210:cc5f20
AAAA2a02:26f0:b700:4::210:cc4820
MX10 tirerack-com.mail.protection.outlook.com.3600
TXT"oci-domain-verification=0taflmyz7OSwSZG8JxEHCqsUcHBmiR8Dp90oZ2rG"3600
TXT"adobe-idp-site-verification=0f9907b2321672aa14abce65ac02cf34a197adf31014cad86d4cba28d5c00959"3600
TXT"openai-domain-verification=dv-5Yfg58ioGi7E02lMQqjxdRj2"3600
TXT"MS=491CA9753CA6797DC737179EBC0ABE2DA77C0E37"3600
TXT"apple-domain-verification=wMaCIvVS4DJp4PFH"3600
TXT"google-site-verification=8XauiSUi3_UqGws8_wfY0jBD6oh3mTXBl5ZmA9zJmqo"3600
TXT"apple-domain-verification=_qFcy5RNRN1oM4WhkVG9c4pOdgZ9NVESrvFAFCazp0o"3600
TXT"facebook-domain-verification=o43yawklr3ixqwi0q0jiw8aiys0paf"3600
TXT"sophos-domain-verification=099beb275b94f2dda8e5a047575eeb1e9b65f0c270c81a244837de77d6e9a24c"3600
TXT"dropbox-domain-verification=u30n3bjdabgf"3600
TXT"atlassian-domain-verification=2twe6xhzSajarFwdiANGMjzze5G3MOPoegJ3JQGwHigjPNhIjI3Q0KcrYnBP37/7"3600
TXT"slack-domain-verification=XavYTlXO8Khjk9sLBFf6dAa1b8uSSdwUfugCpsc8"3600
TXT"google-site-verification=cjlapuPremhdqa1fY1X3o-k89_KnAiIKCHdiJf910_0"3600
TXT"smartsheet-site-validation=mny7PRC_htMkWD9X_WmIvzFpLHBeCrTO"3600
TXT"onx=f7236e9c-231d-41a8-906f-629886b12eba"3600
TXT"google-site-verification=zSdTeFOjWnPEmK3wpqA8H6AhOu1zSMprgHfWD4_n4q0"3600
TXT"57ppHwy9R4i54QNUBKeLfEbyqs2/5vhr4+QB0q/RIbCaCcys6Tc4SpMDaFeTBMmsXMHpgsE7nB8daUdrQ43ZwQ=="3600
TXT"cisco-ci-domain-verification=4998faa761a4b0333501e6c140db3e3c966a681e1a3fcb0a94dd4276fd6d1a47"3600
TXT"webexdomainverification.4d68907f68019c5be053ad06fc0afa2d=838c4364-fd02-4f02-8382-85d7b2a0e0e0"3600
TXT"v=spf1 a:mail.tirerack.com include:spf.protection.outlook.com include:saashr.com include:spfa.cpmails.com ~all"3600
TXT"extensis-domain-verification=9eaea9bc-c999-4ea7-8f24-80a0c8a8c897"3600

Checks

  • !
    Very low TTLs
    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
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • i
    No CAA records
    Without CAA records any certificate authority may issue certificates for this domain. A CAA record limits issuance to the CAs you use.
    #35