racingpost.com

Checked 22 October 2026, 10:24 UTC · via 8.8.8.8
!Passed with warnings
26 passed 2 warnings 0 failed 3 info

Registration

info

.com generic · Amazon Registrar, Inc. · expires 2027-09-30

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Amazon Registrar, Inc.
Registered
1 October 1996
Last changed
26 August 2026
Expires
30 September 2027
Status
client transfer prohibited
Registry nameservers
ns-1391.awsdns-45.org, ns-1603.awsdns-08.co.uk, ns-394.awsdns-49.com, ns-913.awsdns-50.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 2027-09-30 #3
    The registration is valid until 2027-09-30 (342 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

ns-1391.awsdns-45.org, ns-1603.awsdns-08.co.uk, ns-394.awsdns-49.com, ns-913.awsdns-50.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1391.awsdns-45.org, ns-1603.awsdns-08.co.uk, ns-394.awsdns-49.com, ns-913.awsdns-50.net
NS in the zone
ns-1391.awsdns-45.org, ns-1603.awsdns-08.co.uk, ns-394.awsdns-49.com, ns-913.awsdns-50.net
NameserverAddressesNetwork (AS)Glue
ns-1391.awsdns-45.org205.251.197.111 2600:9000:5305:6f00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1603.awsdns-08.co.uk205.251.198.67 2600:9000:5306:4300::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-394.awsdns-49.com205.251.193.138 2600:9000:5301:8a00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.138 2600:9000:5301:8a00::1
ns-913.awsdns-50.net205.251.195.145 2600:9000:5303:9100::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1391.awsdns-45.org, ns-1603.awsdns-08.co.uk, ns-394.awsdns-49.com, ns-913.awsdns-50.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 4 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS16509 (AMAZON-02 - Amazon.com, Inc., US): 8 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • ✓ Nameserver names under 4 TLDs #12
    Nameserver names use the TLDs .com, .net, .org, .uk.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-1391.awsdns-45.org 205.251.197.111NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1391.awsdns-45.org 2600:9000:5305:6f00::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1603.awsdns-08.co.uk 205.251.198.67NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1603.awsdns-08.co.uk 2600:9000:5306:4300::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-394.awsdns-49.com 205.251.193.138NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-394.awsdns-49.com 2600:9000:5301:8a00::1NOERROR, 10 ms, authoritativenoyes / yesrefused-
ns-913.awsdns-50.net 205.251.195.145NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-913.awsdns-50.net 2600:9000:5303:9100::1NOERROR, 4 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 8 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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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 1 · primary ns-913.awsdns-50.net

Found

Primary (MNAME)
ns-913.awsdns-50.net
Contact (RNAME)
awsdns-hostmaster.amazon.com
Serial
1
Refresh / retry
7200 s / 900 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns-1391.awsdns-45.org (205.251.197.111)1
ns-1391.awsdns-45.org (2600:9000:5305:6f00::1)1
ns-1603.awsdns-08.co.uk (205.251.198.67)1
ns-1603.awsdns-08.co.uk (2600:9000:5306:4300::1)1
ns-394.awsdns-49.com (205.251.193.138)1
ns-394.awsdns-49.com (2600:9000:5301:8a00::1)1
ns-913.awsdns-50.net (205.251.195.145)1
ns-913.awsdns-50.net (2600:9000:5303:9100::1)1

Checks

  • ✓ Serial 1 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 15m, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns-913.awsdns-50.net is one of the listed nameservers.
  • ✓ Contact awsdns-hostmaster@amazon.com #25
    The SOA RNAME awsdns-hostmaster.amazon.com means awsdns-hostmaster@amazon.com.
  • ✓ Counter serial #26
    The serial 1 is a plain counter.

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

29 records at the apex

Found

Read from
205.251.197.111:53
TypeValueTTL
SOAns-913.awsdns-50.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1391.awsdns-45.org.172800
NSns-1603.awsdns-08.co.uk.172800
NSns-394.awsdns-49.com.172800
NSns-913.awsdns-50.net.172800
A108.138.26.11860
A108.138.26.9460
A108.138.26.11560
A108.138.26.5060
MX10 eu-smtp-inbound-1.mimecast.com.60
MX10 eu-smtp-inbound-2.mimecast.com.60
TXT"4iHGl/4lRX3c7bCufKyVBJOWIZ7Craiq9nXZd0fKb2A="3600
TXT"CKO=cli_s2cpitp75kyunmdjgy7b677r2q"3600
TXT"_globalsign-domain-verification=B57sRQpmte4G4w-gavZbVNmmNsMxGp5kcL19UP2599"3600
TXT"_globalsign-domain-verification=MK_ZKmss4D_DdzGOsssHxxBOK6hJc6LGycFvNOESdZ"3600
TXT"_globalsign-domain-verification=V885sKgrYjzaX53m7Wu34JTfg6V7G4yBxR_gOPP1gS"3600
TXT"anthropic-domain-verification-xk73tm=uRJrts5uDARAfIXaSbrJaNZ02"3600
TXT"atlassian-sending-domain-verification=8e04f11f-f2be-41b2-a0c5-8c01597a6b6b"3600
TXT"c2dda5ed86094f4cbc739f46c3895e84"3600
TXT"globalsign-domain-verification=-Q7umwx2mj164XwLa0PsoUaWe2HBhta50GjggsT98f"3600
TXT"google-site-verification=8ZZMgxdYG_jsv1FhPjgNbNXztTfm9wJvt47LtkDLlQg"3600
TXT"google-site-verification=Mp5_dyNsLyv5yyl42OKyoKHibGzI8oat3FIjjLbE6bQ"3600
TXT"google-site-verification=WrOJCLEh9nLbHGNasspxM1wQ76fBi3o7Yugb-19bQCo"3600
TXT"knowbe4-site-verification=1f6795dcd9da1ea48d58aec21a3f5182"3600
TXT"nTbmrsPhwgPAxQAcbEzycxbqwppx8xqg2bLEm2SHe20="3600
TXT"onetrust-domain-verification=87b81af49072470aaf6a56997b4bfb88"3600
TXT"seal-subscriptions-verification=hlar7c40n90kj3sejktg"3600
TXT"v=spf1 ip4:80.71.28.96/27 ip4:213.146.171.170 ip4:5.148.11.184/29 ip4:89.197.166.102/32 ip4:141.0.153.62/32 ip4:35.197.203.186/32 ip4:35.242.182.162/32 ip4:54.77.160.217 ip4:195.2.224.0/24" " ip4:54.77.160.217 ip4:91.186.188.141/26 ip4:83.217.246.94/26 ip4:83.231.158.129/26 ip4:91.186.188.8/26 ip4:185.160.252.224 ip4:217.20.46.224/27 ip4:20.76.43.33 ip4:20.73.222.54 " "ip4:199.255.192.0/22 ip4:199.127.232.0/22 ip4:54.240.0.0/18 ip4:69.169.224.0/20 ip4:23.249.208.0/20 ip4:23.251.224.0/19 ip4:76.223.176.0/20 ip4:54.240.64.0/19 " "include:_spf.google.com include:eu._netblocks.mimecast.com include:us._netblocks.mimecast.com include:spf.protection.outlook.com " "include:shops.shopify.com include:mail.zendesk.com -all"3600
TXT"workplace-domain-verification=2kHWEllXsrjTgCWhAswGu22yJa4mMb"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), MX (1m). Low TTLs are useful just before a planned change.
    #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