icaew.com

Checked 22 October 2026, 09:14 UTC · via 8.8.8.8
!Passed with warnings
25 passed 1 warning 0 failed 5 info

Registration

info

.com generic · Tucows Domains Inc. · expires 2027-07-08

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Tucows Domains Inc.
Registered
9 July 1998
Last changed
9 June 2026
Expires
8 July 2027
Status
client transfer prohibited, client update prohibited
Registry nameservers
dns0.star.co.uk, dns1.star.co.uk
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 2027-07-08 #3
    The registration is valid until 2027-07-08 (258 days).
  • ✓ Transfer locked #4
    Registry status: 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

dns0.star.co.uk, dns1.star.co.uk

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
dns0.star.co.uk, dns1.star.co.uk
NS in the zone
dns0.star.co.uk, dns1.star.co.uk
NameserverAddressesNetwork (AS)Glue
dns0.star.co.uk185.77.72.10 2001:67c:1088::10AS8426 CLARANET-AS - Claranet Limited, GB AS8426 CLARANET-AS - Claranet Limited, GB-
dns1.star.co.uk195.245.201.35 2001:a88:0:fffa::3AS8426 CLARANET-AS - Claranet Limited, GB AS8426 CLARANET-AS - Claranet Limited, GB-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns0.star.co.uk, dns1.star.co.uk.
    #6
  • ✓ 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 2 IPv4 /24s and 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS8426 (CLARANET-AS - Claranet Limited, GB): 4 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 .uk
    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

pass

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns0.star.co.uk 185.77.72.10NOERROR, 5 ms, authoritativenoyes / yesrefused-
dns0.star.co.uk 2001:67c:1088::10NOERROR, 6 ms, authoritativenoyes / yesrefused-
dns1.star.co.uk 195.245.201.35NOERROR, 7 ms, authoritativenoyes / yesrefused-
dns1.star.co.uk 2001:a88:0:fffa::3NOERROR, 6 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 4 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 2021112601 · primary dns0.star.co.uk

Found

Primary (MNAME)
dns0.star.co.uk
Contact (RNAME)
abuse.star.net.uk
Serial
2021112601
Refresh / retry
86400 s / 7200 s
Expire
2419200 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
dns0.star.co.uk (185.77.72.10)2021112601
dns0.star.co.uk (2001:67c:1088::10)2021112601
dns1.star.co.uk (195.245.201.35)2021112601
dns1.star.co.uk (2001:a88:0:fffa::3)2021112601

Checks

  • ✓ Serial 2021112601 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1d, retry 2h, expire 28d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns0.star.co.uk is one of the listed nameservers.
  • ✓ Contact abuse@star.net.uk #25
    The SOA RNAME abuse.star.net.uk means abuse@star.net.uk.
  • ✓ Date-based serial #26
    The serial 2021112601 follows the YYYYMMDDnn convention (2021-11-26).

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

27 records at the apex

Found

Read from
185.77.72.10:53
TypeValueTTL
SOAdns0.star.co.uk. abuse.star.net.uk. 2021112601 86400 7200 2419200 8640086400
NSdns0.star.co.uk.86400
NSdns1.star.co.uk.86400
A51.105.208.207300
MX1 icaew-com.mail.protection.outlook.com.3600
TXT"GbxPbV9f1OuGgtH1sJDfxIDc54g47CnhLe8LCiQ2ScM"3600
TXT"GbxPbV9f1OuGgtH1sJDfxIDc54g47CnhLe8LCiQ2ScM="3600
TXT"M6uCRDPXyqqJwfH+8ei8jzEnoxsYSvawI570ZoWD4Fnwn7vr4D08C3EmCdqWExuIQCrJoAlYMcN3rKlLMGjP5Q=="3600
TXT"MS=ms59119240"3600
TXT"OazfE6zd0kHdSKifyPehtH9TGmBz1+hsLHHWnqTVDPfQtgepS5NUjpvyFls3lB0lYAIxmozTcSk7SZ86X3wUXA=="3600
TXT"YabPb4w6f53rS4HIB3YJNe4IXwCmA2o5WQ2EQH0pgsbmg4837p9vFPZwS8Vr4Wqd6CAjpVM6iUHyD9mcHw7cxg=="3600
TXT"_globalsign-domain-verification=A0iQAR0cbkX-47g_vc2l8QJO-anIlHmFCgfBe6E3n7"3600
TXT"_globalsign-domain-verification=HwEb-BQfrr0RCGogwD7L9wnOoddSEJ_2Do37sphvM9"3600
TXT"_globalsign-domain-verification=mBZ5-ZxvWEU7yPpMnNPKL1eRsouBATdNwSyQzjfKid"3600
TXT"_globalsign-domain-verification=zhPHt31I9AQpBt4-Vm62iiz_1FFl0oQq3hXxe_iKrj"3600
TXT"facebook-domain-verification=8ekliqq7jj4f1v6c895sphd7j91v3z"3600
TXT"facebook-domain-verification=96akpbigb6u3jt5b5objxko1xqsj7n"3600
TXT"facebook-domain-verification=ayg0r757onfznzoujj76v352h1ylre"3600
TXT"facebook-domain-verification=nf1qqqxiuvrjpjqxr5obcvrekuxn4n"3600
TXT"facebook-domain-verification=zkhwpqmoww3t5pzheoa78tmq3ckgau"3600
TXT"globalsign-domain-verification=HuxzWDFTGu6JPeNNMc4XEWsr8bTu-UHa-Y6R02WEyu"3600
TXT"globalsign-domain-verification=MooO9ZNaSVXK4rLWtGxqM9WAG02KOR2oZde3K0wHTE"3600
TXT"globalsign-domain-verification=U7tGx4Q6X2e3JrbZJ_qIIof2OhTFDoqbrrKKHdaD2u"3600
TXT"globalsign-domain-verification=e9HSFB6TvaJieGmixDY17v93veyotsOeYW8IreOEcx"3600
TXT"ibmid=89979b79-3888-4f1f-9aa7-e1de5ea784c9"3600
TXT"ms-domain-verification=52208edf-c828-4132-9736-8ac62c67f9d2"3600
TXT"v=spf1 redirect=2h43wd6h._spf._d.mim.ec"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 1h, NS 1d. The NS TTL at the parent is 2d and in the zone 1d; 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