pcpartpicker.com

Checked 22 October 2026, 10:12 UTC · via 8.8.8.8
!Passed with warnings
29 passed 1 warning 0 failed 5 info

Registration

info

.com generic · Cloudflare, Inc. · expires 2027-05-07

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Cloudflare, Inc.
Registered
7 May 2010
Last changed
6 February 2026
Expires
7 May 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
matt.ns.cloudflare.com, nina.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 2027-05-07 #3
    The registration is valid until 2027-05-07 (197 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

matt.ns.cloudflare.com, nina.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
matt.ns.cloudflare.com, nina.ns.cloudflare.com
NS in the zone
matt.ns.cloudflare.com, nina.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
matt.ns.cloudflare.com172.64.33.131 173.245.59.131 108.162.193.131 2606:4700:58::adf5:3b83 2a06:98c1:50::ac40:2183 2803:f800:50::6ca2:c183AS13335 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., US108.162.193.131 172.64.33.131 173.245.59.131 2606:4700:58::adf5:3b83 2803:f800:50::6ca2:c183 2a06:98c1:50::ac40:2183
nina.ns.cloudflare.com108.162.192.136 173.245.58.136 172.64.32.136 2606:4700:50::adf5:3a88 2a06:98c1:50::ac40:2088 2803:f800:50::6ca2:c088AS13335 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., US108.162.192.136 172.64.32.136 173.245.58.136 2606:4700:50::adf5:3a88 2803:f800:50::6ca2:c088 2a06:98c1:50::ac40:2088

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: matt.ns.cloudflare.com, nina.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
matt.ns.cloudflare.com 172.64.33.131NOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
matt.ns.cloudflare.com 173.245.59.131NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
matt.ns.cloudflare.com 108.162.193.131NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
matt.ns.cloudflare.com 2606:4700:58::adf5:3b83NOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
matt.ns.cloudflare.com 2a06:98c1:50::ac40:2183NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
matt.ns.cloudflare.com 2803:f800:50::6ca2:c183NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
nina.ns.cloudflare.com 108.162.192.136NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
nina.ns.cloudflare.com 173.245.58.136NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
nina.ns.cloudflare.com 172.64.32.136NOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
nina.ns.cloudflare.com 2606:4700:50::adf5:3a88NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
nina.ns.cloudflare.com 2a06:98c1:50::ac40:2088NOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
nina.ns.cloudflare.com 2803:f800:50::6ca2:c088NOERROR, 5 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: matt.ns.cloudflare.com: "2026.10.2"; nina.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 2417426146 · primary matt.ns.cloudflare.com

Found

Primary (MNAME)
matt.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417426146
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
matt.ns.cloudflare.com (172.64.33.131)2417426146
matt.ns.cloudflare.com (173.245.59.131)2417426146
matt.ns.cloudflare.com (108.162.193.131)2417426146
matt.ns.cloudflare.com (2606:4700:58::adf5:3b83)2417426146
matt.ns.cloudflare.com (2a06:98c1:50::ac40:2183)2417426146
matt.ns.cloudflare.com (2803:f800:50::6ca2:c183)2417426146
nina.ns.cloudflare.com (108.162.192.136)2417426146
nina.ns.cloudflare.com (173.245.58.136)2417426146
nina.ns.cloudflare.com (172.64.32.136)2417426146
nina.ns.cloudflare.com (2606:4700:50::adf5:3a88)2417426146
nina.ns.cloudflare.com (2a06:98c1:50::ac40:2088)2417426146
nina.ns.cloudflare.com (2803:f800:50::6ca2:c088)2417426146

Checks

  • ✓ Serial 2417426146 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 matt.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 2417426146 is a Unix timestamp (2046-08-09 11:15 UTC).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
23 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
2371ECDSAP256SHA256 (13)SHA256 8B4652E5B6600259…yes

DNSKEY in the zone

Key tagRoleAlgorithm
2371KSK (257)ECDSAP256SHA256 (13)
34505ZSK (256)ECDSAP256SHA256 (13)

Checks

  • ✓ Signed and validated #27
    The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
  • ✓ DS matches a key #28
    The DS record at the parent matches a key in the zone: key tag 2371 (SHA256).
  • ✓ 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 09:12 UTC and expires at 2026-10-23 11:12 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

26 records at the apex

Found

Read from
172.64.33.131:53
TypeValueTTL
SOAmatt.ns.cloudflare.com. dns.cloudflare.com. 2417426146 10000 2400 604800 18001800
NSmatt.ns.cloudflare.com.86400
NSnina.ns.cloudflare.com.86400
A104.18.99.52300
A104.17.156.24300
MX1 aspmx.l.google.com.300
MX10 aspmx2.googlemail.com.300
MX10 aspmx3.googlemail.com.300
MX5 alt1.aspmx.l.google.com.300
MX5 alt2.aspmx.l.google.com.300
TXT"google-site-verification=SM4EqxJYtb23NOBStJ_DrJ1IRyT9fohvyx1ej5tF8a0"300
TXT"pinterest-site-verification=31c3967df1021012c91871eb873ae977"300
TXT"slack-domain-verification=4A4R11FQ99kdfiJHarAMceG8cyZRrFS60yGx5KDz"300
TXT"v=spf1 a mx ip4:198.37.145.140/32 include:_spf.google.com -all"300
CAA0 iodef "mailto:security@pcpartpicker.com"300
CAA0 issue "amazonaws.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 "ssl.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, 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: amazonaws.com, comodoca.com, digicert.com, letsencrypt.org, pki.goog, ssl.com.