thomascook.com

Checked 22 October 2026, 11:04 UTC · via 8.8.8.8
!Passed with warnings
23 passed 3 warnings 0 failed 5 info

Registration

info

.com generic · Nom-iq Ltd. dba COM LAUDE · expires 2026-12-07

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Nom-iq Ltd. dba COM LAUDE
Registered
8 December 1995
Last changed
8 May 2026
Expires
7 December 2026
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
a1-156.akam.net, a24-67.akam.net, a4-64.akam.net, a5-65.akam.net, a6-66.akam.net, a7-67.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 2026-12-07 #3
    The registration is valid until 2026-12-07 (45 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited, client update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

a1-156.akam.net, a24-67.akam.net, a4-64.akam.net, a5-65.akam.net, a6-66.akam.net, a7-67.akam.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a1-156.akam.net, a24-67.akam.net, a4-64.akam.net, a5-65.akam.net, a6-66.akam.net, a7-67.akam.net
NS in the zone
a1-156.akam.net, a24-67.akam.net, a4-64.akam.net, a5-65.akam.net, a6-66.akam.net, a7-67.akam.net
NameserverAddressesNetwork (AS)Glue
a1-156.akam.net193.108.91.156 2600:1401:2::9cAS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a24-67.akam.net2.16.130.67 2600:1480:9800::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-
a6-66.akam.net23.211.133.66 2600:1401:1::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a7-67.akam.net23.61.199.67 2600:1406:32::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-156.akam.net, a24-67.akam.net, a4-64.akam.net, a5-65.akam.net, a6-66.akam.net, a7-67.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
a1-156.akam.net 193.108.91.156NOERROR, 4 ms, authoritativenoyes / yesrefused41824.6
a1-156.akam.net 2600:1401:2::9cNOERROR, 4 ms, authoritativenoyes / yesrefused41824.5
a24-67.akam.net 2.16.130.67NOERROR, 5 ms, authoritativenoyes / yesrefused48878.32
a24-67.akam.net 2600:1480:9800::43NOERROR, 5 ms, authoritativenoyes / yesrefused48878.27
a4-64.akam.net 72.246.46.64NOERROR, 4 ms, authoritativenoyes / yesrefused48878.31
a4-64.akam.net 2600:1480:9000::40NOERROR, 4 ms, authoritativenoyes / yesrefused48878.29
a5-65.akam.net 95.100.168.65NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
a5-65.akam.net 2600:1480:b000::41NOERROR, 4 ms, authoritativenoyes / yesrefused41824.9
a6-66.akam.net 23.211.133.66NOERROR, 4 ms, authoritativenoyes / yesrefused48878.33
a6-66.akam.net 2600:1401:1::42NOERROR, 4 ms, authoritativenoyes / yesrefused48878.29
a7-67.akam.net 23.61.199.67NOERROR, 4 ms, authoritativenoyes / yesrefused41824.6
a7-67.akam.net 2600:1406:32::43NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8

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: a1-156.akam.net: "41824.6"; a1-156.akam.net: "41824.5"; a24-67.akam.net: "48878.32"; a24-67.akam.net: "48878.27"; a4-64.akam.net: "48878.31"; a4-64.akam.net: "48878.29"; a5-65.akam.net: "41824.8"; a5-65.akam.net: "41824.9"; a6-66.akam.net: "48878.33"; a6-66.akam.net: "48878.29"; a7-67.akam.net: "41824.6"; a7-67.akam.net: "41824.8". 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 2024093037 · primary a1-156.akam.net

Found

Primary (MNAME)
a1-156.akam.net
Contact (RNAME)
a24-67.akam.net
Serial
2024093037
Refresh / retry
3600 s / 600 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
a1-156.akam.net (193.108.91.156)2024093037
a1-156.akam.net (2600:1401:2::9c)2024093037
a24-67.akam.net (2.16.130.67)2024093037
a24-67.akam.net (2600:1480:9800::43)2024093037
a4-64.akam.net (72.246.46.64)2024093037
a4-64.akam.net (2600:1480:9000::40)2024093037
a5-65.akam.net (95.100.168.65)2024093037
a5-65.akam.net (2600:1480:b000::41)2024093037
a6-66.akam.net (23.211.133.66)2024093037
a6-66.akam.net (2600:1401:1::42)2024093037
a7-67.akam.net (23.61.199.67)2024093037
a7-67.akam.net (2600:1406:32::43)2024093037

Checks

  • ✓ Serial 2024093037 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 10m, expire 7d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver a1-156.akam.net is one of the listed nameservers.
  • ✓ Contact a24-67@akam.net #25
    The SOA RNAME a24-67.akam.net means a24-67@akam.net.
  • ✓ Date-based serial #26
    The serial 2024093037 follows the YYYYMMDDnn convention (2024-09-30).

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

35 records at the apex

Found

Read from
193.108.91.156:53
TypeValueTTL
SOAa1-156.akam.net. a24-67.akam.net. 2024093037 3600 600 604800 3003600
NSa6-66.akam.net.3600
NSa1-156.akam.net.3600
NSa7-67.akam.net.3600
NSa5-65.akam.net.3600
NSa4-64.akam.net.3600
NSa24-67.akam.net.3600
A2.16.204.2420
A2.16.204.1320
AAAA2a02:26f0:b700:4::210:cc5720
AAAA2a02:26f0:b700:4::210:cc6020
MX10 smtp.google.com.3600
TXT"MS=ms66373475"3600
TXT"google-site-verification=PlZ7YgC-vitseHxngj-NYfEmtkyWumafgaYxdnIZjKQ"3600
TXT"vd9a15edu1jbbm4lqd8kkr6na1"3600
TXT"mojecertpl-site-verification-h12rseN6efFoJK2BD7Tu34Ckxinx4DLH"3600
TXT"k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCjvLoSGaQ+tjM7bSmC7tI9xGsRRnlYYb3YYDXe1u7BOKATPJCGZ5PDf4StR17ZzDN6AHcSOfUqeivwrEFPqyEaw/FMZEzv9dzomom/vgWAlT55qUtNnF09nR2VfelM1G0UVNqmrTipUaweS1zp50xjuT92DgpIw61r9rdRYLFbMQIDAQAB"3600
TXT"4lbun0lc0dmjgk0ol0bb5flrnh"3600
TXT"MS=ms31863047"3600
TXT"MS=ms53147880"3600
TXT"google-site-verification=nTZ6a_PjfJJjx-i-1sd02hrZKW5esJE2f0601eb2ic0"3600
TXT"anthropic-domain-verification-28263z=FaODbDdLZDgVVwotzvhbVLFil"3600
TXT"MS=ms41797821"3600
TXT"ubsiidq08v8fdtv22qriake821"3600
TXT"d2lahvjt5jne9i.cloudfront.net"3600
TXT"tiktok-developers-site-verification=7ZG6wbtQMvdzzbcl6Hx3QpRc34dxCHSb"3600
TXT"rkddbrqyjkh4yvbkqm5ktgc5x1jcplky"3600
TXT"MS=ms41831275"3600
TXT"notion-domain-verification=HmQn7QgHWuUcGUSFjRF3zb66rKUIGBGBRY3ZMTE2oJM"3600
TXT"28hnvb6q65y8s73x5dj5hrxw9hl5qcjs"3600
TXT"hibp-verify=dweb_vmqz2u9cm1qnhn4s62dur0zs"3600
TXT"facebook-domain-verification=wv3jccfml3cs4meumrlx2ifi0exxyg"3600
TXT"pardot269772=1d6edbd85f7090b566a705e85d99f7d532bd340e860f5d19d34735e3d6970441"3600
TXT"QHgvdWsw9IqK0KvghOqDA1I0xZo6YQbkCVneDLOdC8M="3600
TXT"v=spf1 include:spf.protection.outlook.com include:spf.ssmx.net include:_spf.emaillabs.net.pl include:_spf.google.com -all"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.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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