whmcs.com

Checked 22 October 2026, 11:31 UTC · via 8.8.8.8
!Passed with warnings
23 passed 3 warnings 0 failed 5 info

Registration

info

.com generic · eNom, LLC · expires 2027-06-10

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
eNom, LLC
Registered
10 June 2005
Last changed
12 May 2026
Expires
10 June 2027
Status
client transfer prohibited
Registry nameservers
ns1.whmcs.com, ns2.whmcs.com
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 2027-06-10 #3
    The registration is valid until 2027-06-10 (230 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

warn

ns1.whmcs.com, ns2.whmcs.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.whmcs.com, ns2.whmcs.com
NS in the zone
ns1.whmcs.com, ns2.whmcs.com
NameserverAddressesNetwork (AS)Glue
ns1.whmcs.com162.159.8.226 2400:cb00:2049:1::a29f:8e2AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US162.159.8.226
ns2.whmcs.com162.159.9.128 2400:cb00:2049:1::a29f:980AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US162.159.9.128

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.whmcs.com, ns2.whmcs.com.
    #6
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: ns1.whmcs.com (glue 162.159.8.226, zone 162.159.8.226, 2400:cb00:2049:1::a29f:8e2); ns2.whmcs.com (glue 162.159.9.128, zone 162.159.9.128, 2400:cb00:2049:1::a29f:980). Update the glue at your registrar.
    #8
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • i
    One address family in one network
    all IPv6 addresses are in 2400:cb00:2049::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 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 .com
    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

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.whmcs.com 162.159.8.226NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ns1.whmcs.com 2400:cb00:2049:1::a29f:8e2NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ns2.whmcs.com 162.159.9.128NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ns2.whmcs.com 2400:cb00:2049:1::a29f:980NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2

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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns1.whmcs.com: "2026.10.2"; ns2.whmcs.com: "2026.10.2". 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 2417927423 · primary ns1.whmcs.com

Found

Primary (MNAME)
ns1.whmcs.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417927423
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
ns1.whmcs.com (162.159.8.226)2417927423
ns1.whmcs.com (2400:cb00:2049:1::a29f:8e2)2417927423
ns2.whmcs.com (162.159.9.128)2417927423
ns2.whmcs.com (2400:cb00:2049:1::a29f:980)2417927423

Checks

  • ✓ Serial 2417927423 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 40m, expire 7d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.whmcs.com is one of the listed nameservers.
  • ✓ Contact dns@cloudflare.com #25
    The SOA RNAME dns.cloudflare.com means dns@cloudflare.com.
  • ✓ Timestamp serial #26
    The serial 2417927423 is a Unix timestamp (2046-08-15 06:30 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

pass

32 records at the apex

Found

Read from
162.159.8.226:53
TypeValueTTL
SOAns1.whmcs.com. dns.cloudflare.com. 2417927423 10000 2400 604800 18001800
NSns1.whmcs.com.86400
NSns2.whmcs.com.86400
A104.20.36.75300
A172.66.151.35300
AAAA2606:4700:10::6814:244b300
AAAA2606:4700:10::ac42:9723300
MX0 whmcs-com.mail.protection.outlook.com.3600
TXT"MS=ms12214042"300
TXT"ZOOM_verify_kODLQaPgTk6we1aSZUKVxA"300
TXT"apple-domain-verification=wuYDkEX7tNQfFe7u"300
TXT"atlassian-domain-verification=vcYdHk4xtnbRpbrSLWAxTbfXTGV6hunHiLsUuCQnceklQF/q5LSGpj0an1qzE4SN"300
TXT"facebook-domain-verification=yp03vh9k65tlvwspcs6qsl8rcmcwjs"300
TXT"github-verification=vxBXcdSEufn37FKt5LetUEHpCv5TEh3UvAWAWLED"300
TXT"google-site-verification=4Ulf1rBpWWcmlS-cbs5WZ3iXs76utB1q8MXhsmlTIqI"300
TXT"google-site-verification=EYRNIhHKXoTTgI09icG9RzKxAFVo6QFqt1tRdHDih_0"300
TXT"google-site-verification=yRPOH45lm4XUKiUZeLwFScIcQPBD_JmuvI4uvO4OU5A"300
TXT"knowbe4-site-verification=908000ab199b1eca5e17f7271a4559cd"300
TXT"v=spf1 a mx a:marketplace.whmcs.com ip4:184.94.192.9 ip4:184.94.192.10 ip4:208.74.120.226 ip4:208.74.120.231 ip4:208.74.121.151 ip4:208.74.124.169 exists:%{i}._spf.sparkpostmail.com include:spf.protection.outlook.com" " include:1784136.spf01.hubspotemail.net include:mail.zendesk.com -all"300
CAA0 issue "amazon.com"300
CAA0 issue "comodoca.com"300
CAA0 issue "digicert.com; cansignhttpexchanges=yes"300
CAA0 issue "letsencrypt.org"300
CAA0 issue "pki.goog; cansignhttpexchanges=yes"300
CAA0 issue "sectigo.com"300
CAA0 issue "ssl.com"300
CAA0 issuewild "amazonaws.com"300
CAA0 issuewild "comodoca.com"300
CAA0 issuewild "digicert.com; cansignhttpexchanges=yes"300
CAA0 issuewild "letsencrypt.org"300
CAA0 issuewild "pki.goog; cansignhttpexchanges=yes"300
CAA0 issuewild "ssl.com"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: amazon.com, comodoca.com, digicert.com, letsencrypt.org, pki.goog, sectigo.com, ssl.com, amazonaws.com.