Domain report: metricool.com

Registration

info

.com generic · GoDaddy.com, LLC · expires 2027-04-04

Found

TLD: .com (generic)
ICANN policies apply: yes
Registrar: GoDaddy.com, LLC
Registered: 4 April 2015
Last changed: 18 September 2022
Expires: 4 April 2027
Status: client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited
Registry nameservers: rudy.ns.cloudflare.com, sasha.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 2027-04-04 #3

The registration is valid until 2027-04-04 (163 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

rudy.ns.cloudflare.com, sasha.ns.cloudflare.com

Found

Parent zone: com
Delegation from: a.gtld-servers.net (192.5.6.30)
NS at the parent: rudy.ns.cloudflare.com, sasha.ns.cloudflare.com
NS in the zone: rudy.ns.cloudflare.com, sasha.ns.cloudflare.com

Nameserver	Addresses	Network (AS)	Glue
rudy.ns.cloudflare.com	172.64.33.229 108.162.193.229 173.245.59.229 2606:4700:58::adf5:3be5 2803:f800:50::6ca2:c1e5 2a06:98c1:50::ac40:21e5	AS13335 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., US	108.162.193.229 172.64.33.229 173.245.59.229 2606:4700:58::adf5:3be5 2803:f800:50::6ca2:c1e5 2a06:98c1:50::ac40:21e5
sasha.ns.cloudflare.com	172.64.34.69 108.162.194.69 162.159.38.69 2803:f800:50::6ca2:c245 2606:4700:50::a29f:2645 2a06:98c1:50::ac40:2245	AS13335 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., US	108.162.194.69 162.159.38.69 172.64.34.69 2606:4700:50::a29f:2645 2803:f800:50::6ca2:c245 2a06:98c1:50::ac40:2245

Checks

i

2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: rudy.ns.cloudflare.com, sasha.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

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
rudy.ns.cloudflare.com 172.64.33.229	NOERROR, 14 ms, authoritative	no	yes / yes	refused	2026.10.2
rudy.ns.cloudflare.com 108.162.193.229	NOERROR, 14 ms, authoritative	no	yes / yes	refused	2026.10.2
rudy.ns.cloudflare.com 173.245.59.229	NOERROR, 14 ms, authoritative	no	yes / yes	refused	2026.10.2
rudy.ns.cloudflare.com 2606:4700:58::adf5:3be5	NOERROR, 20 ms, authoritative	no	yes / yes	refused	2026.10.2
rudy.ns.cloudflare.com 2803:f800:50::6ca2:c1e5	NOERROR, 19 ms, authoritative	no	yes / yes	refused	2026.10.2
rudy.ns.cloudflare.com 2a06:98c1:50::ac40:21e5	NOERROR, 19 ms, authoritative	no	yes / yes	refused	2026.10.2
sasha.ns.cloudflare.com 172.64.34.69	NOERROR, 15 ms, authoritative	no	yes / yes	refused	2026.10.2
sasha.ns.cloudflare.com 108.162.194.69	NOERROR, 14 ms, authoritative	no	yes / yes	refused	2026.10.2
sasha.ns.cloudflare.com 162.159.38.69	NOERROR, 32 ms, authoritative	no	yes / yes	refused	2026.10.2
sasha.ns.cloudflare.com 2803:f800:50::6ca2:c245	NOERROR, 18 ms, authoritative	no	yes / yes	refused	2026.10.2
sasha.ns.cloudflare.com 2606:4700:50::a29f:2645	NOERROR, 19 ms, authoritative	no	yes / yes	refused	2026.10.2
sasha.ns.cloudflare.com 2a06:98c1:50::ac40:2245	NOERROR, 19 ms, authoritative	no	yes / yes	refused	2026.10.2

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: rudy.ns.cloudflare.com: "2026.10.2"; sasha.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 2417420826 · primary rudy.ns.cloudflare.com

Found

Primary (MNAME): rudy.ns.cloudflare.com
Contact (RNAME): dns.cloudflare.com
Serial: 2417420826
Refresh / retry: 10000 s / 2400 s
Expire: 604800 s
Negative TTL: 1800 s

Serial per nameserver

Nameserver	Serial
rudy.ns.cloudflare.com (172.64.33.229)	2417420826
rudy.ns.cloudflare.com (108.162.193.229)	2417420826
rudy.ns.cloudflare.com (173.245.59.229)	2417420826
rudy.ns.cloudflare.com (2606:4700:58::adf5:3be5)	2417420826
rudy.ns.cloudflare.com (2803:f800:50::6ca2:c1e5)	2417420826
rudy.ns.cloudflare.com (2a06:98c1:50::ac40:21e5)	2417420826
sasha.ns.cloudflare.com (172.64.34.69)	2417420826
sasha.ns.cloudflare.com (108.162.194.69)	2417420826
sasha.ns.cloudflare.com (162.159.38.69)	2417420826
sasha.ns.cloudflare.com (2803:f800:50::6ca2:c245)	2417420826
sasha.ns.cloudflare.com (2606:4700:50::a29f:2645)	2417420826
sasha.ns.cloudflare.com (2a06:98c1:50::ac40:2245)	2417420826

Checks

✓ Serial 2417420826 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 rudy.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 2417420826 is a Unix timestamp (2046-08-09 09:47 UTC).

DNSSEC

warn

Signed, but no DS at parent

Found

Validated by resolver: no
Denial of existence: NSEC
Signatures valid until: 23 October 2026

DNSKEY in the zone

Key tag	Role	Algorithm
2371	KSK (257)	ECDSAP256SHA256 (13)
34505	ZSK (256)	ECDSAP256SHA256 (13)

Checks

!

Signed but not delegated securely

The zone is signed but the parent has no DS record, so the signatures are not used. Publish the DS record at your registrar.

#27
✓ Modern algorithms #29

Key algorithms: ECDSAP256SHA256 (13).
✓ Short-lived signatures (online signing) #30

Signatures are valid for 50h0m0s and created on demand; the current one was made at 2026-10-21 08:50 UTC and expires at 2026-10-23 10:50 UTC.
i

NSEC

The zone uses NSEC, so its full contents can be listed by walking the NSEC chain. That is fine unless the names are sensitive.

#31

Records

pass

41 records at the apex

Found

Read from: 172.64.33.229:53

Type	Value	TTL
SOA	rudy.ns.cloudflare.com. dns.cloudflare.com. 2417420826 10000 2400 604800 1800	1800
NS	rudy.ns.cloudflare.com.	86400
NS	sasha.ns.cloudflare.com.	86400
A	104.26.7.108	300
A	104.26.6.108	300
A	172.67.72.173	300
AAAA	2606:4700:20::681a:66c	300
AAAA	2606:4700:20::ac43:48ad	300
AAAA	2606:4700:20::681a:76c	300
MX	1 aspmx.l.google.com.	300
MX	10 alt3.aspmx.l.google.com.	300
MX	10 alt4.aspmx.l.google.com.	300
MX	5 alt1.aspmx.l.google.com.	300
MX	5 alt2.aspmx.l.google.com.	300
TXT	"anthropic-domain-verification-50qtwj=cvMHI5hEdcamXotXQGRBNpfzR"	300
TXT	"google-site-verification=5iWKsniipEs15GQvV8UIS9pN3qRLxQuGLCJM9KWXMIE"	300
TXT	"teamtailor=b944b758ed1049c7d91a544fddd0092e"	300
TXT	"v=spf1 a include:_spf.sparkpostmail.com include:_spf.eu.sparkpostmail.com include:amazonses.com include:_spf.google.com ip4:198.244.61.9 ip4:198.244.59.95 -all"	300
CAA	0 iodef "mailto:devops@metricool.com"	300
CAA	0 issue "amazon.com"	300
CAA	0 issue "amazonaws.com"	300
CAA	0 issue "amazontrust.com"	300
CAA	0 issue "awstrust.com"	300
CAA	0 issue "comodoca.com"	300
CAA	0 issue "digicert.com; cansignhttpexchanges=yes"	300
CAA	0 issue "letsencrypt.org"	300
CAA	0 issue "pki.goog; cansignhttpexchanges=yes"	300
CAA	0 issue "sectigo.com"	300
CAA	0 issue "ssl.com"	300
CAA	0 issue "starfieldtech.com"	300
CAA	0 issuewild "amazon.com"	300
CAA	0 issuewild "amazonaws.com"	300
CAA	0 issuewild "amazontrust.com"	300
CAA	0 issuewild "awstrust.com"	300
CAA	0 issuewild "comodoca.com"	300
CAA	0 issuewild "digicert.com; cansignhttpexchanges=yes"	300
CAA	0 issuewild "letsencrypt.org"	300
CAA	0 issuewild "pki.goog; cansignhttpexchanges=yes"	300
CAA	0 issuewild "sectigo.com"	300
CAA	0 issuewild "ssl.com"	300
CAA	0 issuewild "starfieldtech.com"	300

Checks

✓ TTLs within range #32

TTLs: A 5m, AAAA 5m, MX 5m, 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, amazonaws.com, amazontrust.com, awstrust.com, comodoca.com, digicert.com, letsencrypt.org, pki.goog, sectigo.com, ssl.com, starfieldtech.com.