imdb.com

Checked 22 October 2026, 09:15 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 4 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2027-01-04

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
5 January 1996
Last changed
31 October 2025
Expires
4 January 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
ns1.amzndns.co.uk, ns1.amzndns.com, ns1.amzndns.net, ns1.amzndns.org, ns2.amzndns.co.uk, ns2.amzndns.com, ns2.amzndns.net, ns2.amzndns.org
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 2027-01-04 #3
    The registration is valid until 2027-01-04 (73 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

pass

ns1.amzndns.co.uk, ns1.amzndns.com, ns1.amzndns.net, ns1.amzndns.org, ns2.amzndns.co.uk, ns2.amzndns.com, ns2.amzndns.net, ns2.amzndns.org

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.amzndns.co.uk, ns1.amzndns.com, ns1.amzndns.net, ns1.amzndns.org, ns2.amzndns.co.uk, ns2.amzndns.com, ns2.amzndns.net, ns2.amzndns.org
NS in the zone
ns1.amzndns.co.uk, ns1.amzndns.com, ns1.amzndns.net, ns1.amzndns.org, ns2.amzndns.co.uk, ns2.amzndns.com, ns2.amzndns.net, ns2.amzndns.org
NameserverAddressesNetwork (AS)Glue
ns1.amzndns.co.uk156.154.67.10 2001:502:4612::10AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
ns1.amzndns.com156.154.64.10 2001:502:f3ff::10AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US156.154.64.10 2001:502:f3ff::10
ns1.amzndns.net156.154.65.10 2610:a1:1014::10AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
ns1.amzndns.org156.154.66.10 2610:a1:1015::10AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
ns2.amzndns.co.uk204.74.120.1 2610:a1:32d1::53AS399154 SECURITYSERVICES - Vercara, LLC, US AS399154 SECURITYSERVICES - Vercara, LLC, US-
ns2.amzndns.com156.154.68.10 2610:a1:1016::10AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US156.154.68.10 2610:a1:1016::10
ns2.amzndns.net156.154.69.10 2610:a1:1017::10AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
ns2.amzndns.org156.154.150.1 2610:a1:31d1::53AS399153 SECURITYSERVICES - Vercara, LLC, US AS399155 SECURITYSERVICES - Vercara, LLC, US-

Checks

  • ✓ 8 nameservers #6
    Delegated to ns1.amzndns.co.uk, ns1.amzndns.com, ns1.amzndns.net, ns1.amzndns.org, ns2.amzndns.co.uk, ns2.amzndns.com, ns2.amzndns.net, ns2.amzndns.org.
  • ✓ 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 8 IPv4 /24s and 8 IPv6 /48s.
  • ✓ 4 autonomous systems #11
    The nameservers are spread over: AS12008 (VERCARA - Vercara, LLC, US): 12 addresses; AS399153 (SECURITYSERVICES - Vercara, LLC, US): 1 address; AS399154 (SECURITYSERVICES - Vercara, LLC, US): 2 addresses; AS399155 (SECURITYSERVICES - Vercara, LLC, US): 1 address.
  • ✓ 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

info

16 of 16 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.amzndns.co.uk 156.154.67.10NOERROR, 31 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns1.amzndns.co.uk 2001:502:4612::10NOERROR, 31 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns1.amzndns.com 156.154.64.10NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns1.amzndns.com 2001:502:f3ff::10NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns1.amzndns.net 156.154.65.10NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns1.amzndns.net 2610:a1:1014::10NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns1.amzndns.org 156.154.66.10NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns1.amzndns.org 2610:a1:1015::10NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns2.amzndns.co.uk 204.74.120.1NOERROR, 14 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns2.amzndns.co.uk 2610:a1:32d1::53NOERROR, 14 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns2.amzndns.com 156.154.68.10NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns2.amzndns.com 2610:a1:1016::10NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns2.amzndns.net 156.154.69.10NOERROR, 13 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns2.amzndns.net 2610:a1:1017::10NOERROR, 13 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns2.amzndns.org 156.154.150.1NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
ns2.amzndns.org 2610:a1:31d1::53NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver

Checks

  • ✓ All respond #14
    All 16 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns1.amzndns.co.uk: "UltraDNS Nameserver"; ns1.amzndns.com: "UltraDNS Nameserver"; ns1.amzndns.net: "UltraDNS Nameserver"; ns1.amzndns.org: "UltraDNS Nameserver"; ns2.amzndns.co.uk: "UltraDNS Nameserver"; ns2.amzndns.com: "UltraDNS Nameserver"; ns2.amzndns.net: "UltraDNS Nameserver"; ns2.amzndns.org: "UltraDNS Nameserver".
    #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

warn

serial 200910385 · primary dns-external-master.amazon.com

Found

Primary (MNAME)
dns-external-master.amazon.com
Contact (RNAME)
root.amazon.com
Serial
200910385
Refresh / retry
600 s / 300 s
Expire
604800 s
Negative TTL
900 s

Serial per nameserver

NameserverSerial
ns1.amzndns.co.uk (156.154.67.10)200910385
ns1.amzndns.co.uk (2001:502:4612::10)200910385
ns1.amzndns.com (156.154.64.10)200910385
ns1.amzndns.com (2001:502:f3ff::10)200910385
ns1.amzndns.net (156.154.65.10)200910385
ns1.amzndns.net (2610:a1:1014::10)200910385
ns1.amzndns.org (156.154.66.10)200910385
ns1.amzndns.org (2610:a1:1015::10)200910385
ns2.amzndns.co.uk (204.74.120.1)200910385
ns2.amzndns.co.uk (2610:a1:32d1::53)200910385
ns2.amzndns.com (156.154.68.10)200910385
ns2.amzndns.com (2610:a1:1016::10)200910385
ns2.amzndns.net (156.154.69.10)200910385
ns2.amzndns.net (2610:a1:1017::10)200910385
ns2.amzndns.org (156.154.150.1)200910385
ns2.amzndns.org (2610:a1:31d1::53)200910385

Checks

  • ✓ Serial 200910385 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 10m is outside 20m–1d. Current values: refresh 10m, retry 5m, expire 7d, negative TTL 15m.
    #23
  • i
    Hidden master
    The primary nameserver dns-external-master.amazon.com is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact root@amazon.com #25
    The SOA RNAME root.amazon.com means root@amazon.com.
  • ✓ Counter serial #26
    The serial 200910385 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

info

29 records at the apex

Found

Read from
156.154.67.10:53
TypeValueTTL
SOAdns-external-master.amazon.com. root.amazon.com. 200910385 600 300 604800 900900
NSns1.amzndns.co.uk.7200
NSns1.amzndns.com.7200
NSns1.amzndns.net.7200
NSns1.amzndns.org.7200
NSns2.amzndns.co.uk.7200
NSns2.amzndns.com.7200
NSns2.amzndns.net.7200
NSns2.amzndns.org.7200
A98.82.155.134900
A44.215.137.99900
A98.82.158.179900
MX10 amazon-smtp.amazon.com.7200
TXT"TS1760027"900
TXT"MS=ms55779356"900
TXT"MS=ms74462343"900
TXT"IPROTA_D66964-XXX"900
TXT"v=spf1 include:amazon.com -all"900
TXT"canva-site-verification=knObS_jT07ww5BsgiACF8g"900
TXT"bluebeam-verification=jcnffcdt5x1u0ay5kp1ds2xctgv0jj"900
TXT"docker-verification=800fa4c1-614f-4e2c-9ee5-c43ea1dc7831"900
TXT"google-site-verification=f3PqOeHGPuPaaRAkAPJ4bSO-O8bDQOohrmdwxtJAIIM"900
TXT"google-site-verification=uL7Y3ZHRGFE5c6a05OXtn2S2Vq6LfrtqsYlwszK0yl8"900
TXT"apple-domain-verification=0jFtlxygq-YPBzUgTNd2qDiTxb6TpG8Hf1qJcLlFb_w"900
TXT"box-domain-verification=ffea95cd0e0d61c302198367155b07e74fd534fa1d867662dc9bf9969b6f535d"900
TXT"kahoot-domain-verification=044996899c64fcdf913eed0ad14e1f19c79bdd590a762d537a2eeeac7c1ba6c0"900
TXT"adobe-idp-site-verification=b6bcd3e5aaffc63607c8bf75744d9a0d1febc50dd7f389428e2ae476c9ba8814"900
TXT"cisco-ci-domain-verification=5b0cade9b99903b93ec19495d546a72dbb24ecf17c3670b02bbf706bb9ba552a"900
TXT"atlassian-domain-verification=ZT4AapXgobCpXIWoNcd7gtMjZyOUdr4EDFMnFUWrqqqgdaQVbDvoGpRaIwj/tgPH"900

Checks

  • ✓ TTLs within range #32
    TTLs: A 15m, MX 2h, NS 2h. The NS TTL at the parent is 2d and in the zone 2h; resolvers may use either.
  • ✓ 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