scribehow.com

Checked 22 October 2026, 10:35 UTC · via 8.8.8.8
!Passed with warnings
28 passed 1 warning 0 failed 6 info

Registration

info

.com generic · Cloudflare, Inc. · expires 2027-12-07

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Cloudflare, Inc.
Registered
7 December 2020
Last changed
14 January 2026
Expires
7 December 2027
Status
client transfer prohibited
Registry nameservers
ashton.ns.cloudflare.com, dell.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 2027-12-07 #3
    The registration is valid until 2027-12-07 (410 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

info

ashton.ns.cloudflare.com, dell.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ashton.ns.cloudflare.com, dell.ns.cloudflare.com
NS in the zone
ashton.ns.cloudflare.com, dell.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
ashton.ns.cloudflare.com162.159.44.173 172.64.35.173 108.162.195.173 2606:4700:58::a29f:2cad 2a06:98c1:50::ac40:23ad 2803:f800:50::6ca2:c3adAS13335 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., US108.162.195.173 162.159.44.173 172.64.35.173 2606:4700:58::a29f:2cad 2803:f800:50::6ca2:c3ad 2a06:98c1:50::ac40:23ad
dell.ns.cloudflare.com172.64.32.94 173.245.58.94 108.162.192.94 2606:4700:50::adf5:3a5e 2a06:98c1:50::ac40:205e 2803:f800:50::6ca2:c05eAS13335 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., US108.162.192.94 172.64.32.94 173.245.58.94 2606:4700:50::adf5:3a5e 2803:f800:50::6ca2:c05e 2a06:98c1:50::ac40:205e

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ashton.ns.cloudflare.com, dell.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
ashton.ns.cloudflare.com 162.159.44.173NOERROR, 32 ms, authoritativenoyes / yesrefused2026.10.2
ashton.ns.cloudflare.com 172.64.35.173NOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
ashton.ns.cloudflare.com 108.162.195.173NOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
ashton.ns.cloudflare.com 2606:4700:58::a29f:2cadNOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
ashton.ns.cloudflare.com 2a06:98c1:50::ac40:23adNOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
ashton.ns.cloudflare.com 2803:f800:50::6ca2:c3adNOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
dell.ns.cloudflare.com 172.64.32.94NOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
dell.ns.cloudflare.com 173.245.58.94NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
dell.ns.cloudflare.com 108.162.192.94NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
dell.ns.cloudflare.com 2606:4700:50::adf5:3a5eNOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
dell.ns.cloudflare.com 2a06:98c1:50::ac40:205eNOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
dell.ns.cloudflare.com 2803:f800:50::6ca2:c05eNOERROR, 7 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: ashton.ns.cloudflare.com: "2026.10.2"; dell.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 2418013909 · primary ashton.ns.cloudflare.com

Found

Primary (MNAME)
ashton.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2418013909
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
ashton.ns.cloudflare.com (162.159.44.173)2418013909
ashton.ns.cloudflare.com (172.64.35.173)2418013909
ashton.ns.cloudflare.com (108.162.195.173)2418013909
ashton.ns.cloudflare.com (2606:4700:58::a29f:2cad)2418013909
ashton.ns.cloudflare.com (2a06:98c1:50::ac40:23ad)2418013909
ashton.ns.cloudflare.com (2803:f800:50::6ca2:c3ad)2418013909
dell.ns.cloudflare.com (172.64.32.94)2418013909
dell.ns.cloudflare.com (173.245.58.94)2418013909
dell.ns.cloudflare.com (108.162.192.94)2418013909
dell.ns.cloudflare.com (2606:4700:50::adf5:3a5e)2418013909
dell.ns.cloudflare.com (2a06:98c1:50::ac40:205e)2418013909
dell.ns.cloudflare.com (2803:f800:50::6ca2:c05e)2418013909

Checks

  • ✓ Serial 2418013909 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 ashton.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 2418013909 is a Unix timestamp (2046-08-16 06:31 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 C1DD5738DCDF37AB…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 09:35 UTC and expires at 2026-10-23 11:35 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

info

29 records at the apex

Found

Read from
162.159.44.173:53
TypeValueTTL
SOAashton.ns.cloudflare.com. dns.cloudflare.com. 2418013909 10000 2400 604800 18001800
NSashton.ns.cloudflare.com.86400
NSdell.ns.cloudflare.com.86400
A104.18.18.104300
A104.18.19.104300
AAAA2606:4700::6812:1368300
AAAA2606:4700::6812:1268300
MX1 aspmx.l.google.com.300
MX10 alt3.aspmx.l.google.com.300
MX10 alt4.aspmx.l.google.com.300
MX5 alt1.aspmx.l.google.com.300
MX5 alt2.aspmx.l.google.com.300
TXT"anthropic-domain-verification-n8jn0r=yTxQafqbauMzP01hSm1TS24cY"300
TXT"cursor-domain-verification-7dqtsv=csyxmeaivV607iZfmxEz1TOXK"300
TXT"dust-domain-verification-3wn7v9=DmDkWI1ki5So8Z1s0bhE9vrMQ"300
TXT"facebook-domain-verification=skxtflhkwztde8jtcax62fiy1sozo3"300
TXT"google-site-verification=GZ6qV4KrjIBFRUFWTG4gaBXCnrBIT40gaBMC7IHMrHM"300
TXT"google-site-verification=JDRRufZx3H1JmLgxw51KjCRV8F3a6MJzUOslBRou7gs"300
TXT"google-site-verification=jgulOUxnsxdavAMwoFr8xzsl3B_YaRisq6HemY6gqfw"300
TXT"launchdarkly-domain-verification=abc03536-f7c8-40d6-b30c-006334e2a93d"300
TXT"linear-domain-verification=iwak7vnpywes"300
TXT"mixpanel-domain-verify=6a52f595-f875-4e49-8723-bb0f9ab9c839"300
TXT"openai-domain-verification=dv-IBLrVWx6DkDkanYZftFJTX6Y"300
TXT"stripe-verification=708BE6200B409B894F9377B3964094BA6280F706BA1E6DE91EA4752BE211F737"300
TXT"v=spf1 include:mail.zendesk.com include:mailgun.org include:u13298602.wl103.sendgrid.net include:_spf.google.com ~all"300
TXT"vercel-domain-verification-9hjhnf=wOhy7SSeLxMeppCDz4t3jwm85"300
TXT"wiz-domain-verification=ee238082a1ddc9c4fd633fce405086aa4a771de2943c04e2acc3e182f4a9e1a1"300
TXT"work-os-domain-verification-gjz7n7=2NDw0DEcCGECVFJ7mwWRKRTyK"300
TXT"zapier-domain-verification-challenge=ff95812d-7830-40f7-9f72-45834a804bce"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.
  • 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