kdnuggets.com

Checked 22 October 2026, 09:31 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 4 info

Registration

info

.com generic · GoDaddy.com, LLC · expires 2028-02-14

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy.com, LLC
Registered
13 February 1997
Last changed
15 February 2026
Expires
14 February 2028
Status
client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited
Registry nameservers
kirk.ns.cloudflare.com, lila.ns.cloudflare.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 2028-02-14 #3
    The registration is valid until 2028-02-14 (479 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client renew 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

kirk.ns.cloudflare.com, lila.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
kirk.ns.cloudflare.com, lila.ns.cloudflare.com
NS in the zone
kirk.ns.cloudflare.com, lila.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
kirk.ns.cloudflare.com173.245.59.192 108.162.193.192 172.64.33.192 2a06:98c1:50::ac40:21c0 2803:f800:50::6ca2:c1c0 2606:4700:58::adf5:3bc0AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US108.162.193.192 172.64.33.192 173.245.59.192 2606:4700:58::adf5:3bc0 2803:f800:50::6ca2:c1c0 2a06:98c1:50::ac40:21c0
lila.ns.cloudflare.com173.245.58.186 172.64.32.186 108.162.192.186 2606:4700:50::adf5:3aba 2803:f800:50::6ca2:c0ba 2a06:98c1:50::ac40:20baAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US108.162.192.186 172.64.32.186 173.245.58.186 2606:4700:50::adf5:3aba 2803:f800:50::6ca2:c0ba 2a06:98c1:50::ac40:20ba

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: kirk.ns.cloudflare.com, lila.ns.cloudflare.com.
    #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 6 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 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 .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

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
kirk.ns.cloudflare.com 173.245.59.192NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
kirk.ns.cloudflare.com 108.162.193.192NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
kirk.ns.cloudflare.com 172.64.33.192NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
kirk.ns.cloudflare.com 2a06:98c1:50::ac40:21c0NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
kirk.ns.cloudflare.com 2803:f800:50::6ca2:c1c0NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
kirk.ns.cloudflare.com 2606:4700:58::adf5:3bc0NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
lila.ns.cloudflare.com 173.245.58.186NOERROR, 17 ms, authoritativenoyes / yesrefused2026.10.2
lila.ns.cloudflare.com 172.64.32.186NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
lila.ns.cloudflare.com 108.162.192.186NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
lila.ns.cloudflare.com 2606:4700:50::adf5:3abaNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
lila.ns.cloudflare.com 2803:f800:50::6ca2:c0baNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
lila.ns.cloudflare.com 2a06:98c1:50::ac40:20baNOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2

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: kirk.ns.cloudflare.com: "2026.10.2"; lila.ns.cloudflare.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 2417554775 · primary kirk.ns.cloudflare.com

Found

Primary (MNAME)
kirk.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417554775
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
kirk.ns.cloudflare.com (173.245.59.192)2417554775
kirk.ns.cloudflare.com (108.162.193.192)2417554775
kirk.ns.cloudflare.com (172.64.33.192)2417554775
kirk.ns.cloudflare.com (2a06:98c1:50::ac40:21c0)2417554775
kirk.ns.cloudflare.com (2803:f800:50::6ca2:c1c0)2417554775
kirk.ns.cloudflare.com (2606:4700:58::adf5:3bc0)2417554775
lila.ns.cloudflare.com (173.245.58.186)2417554775
lila.ns.cloudflare.com (172.64.32.186)2417554775
lila.ns.cloudflare.com (108.162.192.186)2417554775
lila.ns.cloudflare.com (2606:4700:50::adf5:3aba)2417554775
lila.ns.cloudflare.com (2803:f800:50::6ca2:c0ba)2417554775
lila.ns.cloudflare.com (2a06:98c1:50::ac40:20ba)2417554775

Checks

  • ✓ Serial 2417554775 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 kirk.ns.cloudflare.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 2417554775 is a Unix timestamp (2046-08-10 22:59 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

24 records at the apex

Found

Read from
173.245.59.192:53
TypeValueTTL
SOAkirk.ns.cloudflare.com. dns.cloudflare.com. 2417554775 10000 2400 604800 18001800
NSkirk.ns.cloudflare.com.86400
NSlila.ns.cloudflare.com.86400
A199.16.172.132300
A199.16.173.149300
MX1 aspmx.l.google.com.3600
MX10 alt3.aspmx.l.google.com.3600
MX10 alt4.aspmx.l.google.com.3600
MX5 alt1.aspmx.l.google.com.3600
MX5 alt2.aspmx.l.google.com.3600
TXT"_2wujmy95kwkcw3j5lfmns18ukxdarff"300
TXT"google-site-verification=cfeL4FhB7E-L429hHcgMBDjJRK_Dfo72HB8qIBsGNI8"300
TXT"google-site-verification=vuUQDR0wUaE1eKYrpwhrzv8f6JD-8eDYBQ_ErwUJc8s"300
TXT"v=spf1 ip4:162.144.110.81 +a +mx +ip4:216.172.177.46 +include:websitewelcome.com include:_spf.google.com ~all"300
CAA0 issue "comodoca.com"3600
CAA0 issue "digicert.com; cansignhttpexchanges=yes"3600
CAA0 issue "letsencrypt.org"3600
CAA0 issue "pki.goog; cansignhttpexchanges=yes"3600
CAA0 issue "ssl.com"3600
CAA0 issuewild "comodoca.com"3600
CAA0 issuewild "digicert.com; cansignhttpexchanges=yes"3600
CAA0 issuewild "letsencrypt.org"3600
CAA0 issuewild "pki.goog; cansignhttpexchanges=yes"3600
CAA0 issuewild "ssl.com"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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: comodoca.com, digicert.com, letsencrypt.org, pki.goog, ssl.com.