wttw.com

Checked 22 October 2026, 11:33 UTC · via 8.8.8.8
!Passed with warnings
28 passed 1 warning 0 failed 5 info

Registration

info

.com generic · Cloudflare, Inc. · expires 2033-02-16

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Cloudflare, Inc.
Registered
15 February 1996
Last changed
5 May 2025
Expires
16 February 2033
Status
client transfer prohibited
Registry nameservers
doug.ns.cloudflare.com, lily.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 2033-02-16 #3
    The registration is valid until 2033-02-16 (2308 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

doug.ns.cloudflare.com, lily.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
doug.ns.cloudflare.com, lily.ns.cloudflare.com
NS in the zone
doug.ns.cloudflare.com, lily.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
doug.ns.cloudflare.com172.64.33.159 173.245.59.159 108.162.193.159 2606:4700:58::adf5:3b9f 2a06:98c1:50::ac40:219f 2803:f800:50::6ca2:c19fAS13335 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., US108.162.193.159 172.64.33.159 173.245.59.159 2606:4700:58::adf5:3b9f 2803:f800:50::6ca2:c19f 2a06:98c1:50::ac40:219f
lily.ns.cloudflare.com108.162.192.130 172.64.32.130 173.245.58.130 2a06:98c1:50::ac40:2082 2803:f800:50::6ca2:c082 2606:4700:50::adf5:3a82AS13335 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., US108.162.192.130 172.64.32.130 173.245.58.130 2606:4700:50::adf5:3a82 2803:f800:50::6ca2:c082 2a06:98c1:50::ac40:2082

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: doug.ns.cloudflare.com, lily.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
doug.ns.cloudflare.com 172.64.33.159NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
doug.ns.cloudflare.com 173.245.59.159NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
doug.ns.cloudflare.com 108.162.193.159NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
doug.ns.cloudflare.com 2606:4700:58::adf5:3b9fNOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
doug.ns.cloudflare.com 2a06:98c1:50::ac40:219fNOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
doug.ns.cloudflare.com 2803:f800:50::6ca2:c19fNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
lily.ns.cloudflare.com 108.162.192.130NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
lily.ns.cloudflare.com 172.64.32.130NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
lily.ns.cloudflare.com 173.245.58.130NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
lily.ns.cloudflare.com 2a06:98c1:50::ac40:2082NOERROR, 19 ms, authoritativenoyes / yesrefused2026.10.2
lily.ns.cloudflare.com 2803:f800:50::6ca2:c082NOERROR, 19 ms, authoritativenoyes / yesrefused2026.10.2
lily.ns.cloudflare.com 2606:4700:50::adf5:3a82NOERROR, 19 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: doug.ns.cloudflare.com: "2026.10.2"; lily.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 2417911942 · primary doug.ns.cloudflare.com

Found

Primary (MNAME)
doug.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417911942
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
doug.ns.cloudflare.com (172.64.33.159)2417911942
doug.ns.cloudflare.com (173.245.59.159)2417911942
doug.ns.cloudflare.com (108.162.193.159)2417911942
doug.ns.cloudflare.com (2606:4700:58::adf5:3b9f)2417911942
doug.ns.cloudflare.com (2a06:98c1:50::ac40:219f)2417911942
doug.ns.cloudflare.com (2803:f800:50::6ca2:c19f)2417911942
lily.ns.cloudflare.com (108.162.192.130)2417911942
lily.ns.cloudflare.com (172.64.32.130)2417911942
lily.ns.cloudflare.com (173.245.58.130)2417911942
lily.ns.cloudflare.com (2a06:98c1:50::ac40:2082)2417911942
lily.ns.cloudflare.com (2803:f800:50::6ca2:c082)2417911942
lily.ns.cloudflare.com (2606:4700:50::adf5:3a82)2417911942

Checks

  • ✓ Serial 2417911942 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 doug.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 2417911942 is a Unix timestamp (2046-08-15 02:12 UTC).

DNSSEC

pass

Signed, DS published at parent

Found

Validated by resolver
yes
Signatures valid until
23 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
2371ECDSAP256SHA256 (13)SHA256 99DF7BCFC68FC9F4…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 10:33 UTC and expires at 2026-10-23 12:33 UTC.

Records

info

38 records at the apex

Found

Read from
172.64.33.159:53
TypeValueTTL
SOAdoug.ns.cloudflare.com. dns.cloudflare.com. 2417911942 10000 2400 604800 18001800
NSdoug.ns.cloudflare.com.86400
NSlily.ns.cloudflare.com.86400
A172.66.41.44300
A172.66.42.212300
AAAA2606:4700:3108::ac42:292c300
AAAA2606:4700:3108::ac42:2ad4300
MX10 us-smtp-inbound-1.mimecast.com.300
MX10 us-smtp-inbound-2.mimecast.com.300
TXT"1password-site-verification=ZCRSD4ETPZHQRFBZOZIGA7YIRY"300
TXT"22ltl0an9ka385dkmtaetm55u1"300
TXT"65fi42s3skos1b8bp4nsjrbnog"300
TXT"HwbrVrwT8AptPt/ThHHCN+sTGlWwt5m1/uUCVN7F5fRkgbcqDXUzHqACjhM7NGS4YunYTkVx8vSxLYaHjcxSlA=="300
TXT"MS=C30BD0A179A7B5B5F7F6516062C6C6EAE46D953B"300
TXT"MS=ms57516453"300
TXT"atlassian-domain-verification=A3zQ84tZ6w/aIZm7dcFsdCx9Nb0M6f13p77gLkKCPtHbaABaPwp7V2ut14lwt1ag"300
TXT"brave-ledger-verification=a40ca903fe0f3c3743016f1215d04ef2ff16b9397dabc41faa573bf51e8407a1"300
TXT"canva-site-verification=fZCiBzlRneUdi7W6MqyYVQ"300
TXT"duo_sso_verification=CD4SVEVdKyeQJt4lm0Bicdmvu7BLGm3hyt8sbQCR7VO48zLNlo1M8DqNR3ezo5ve"300
TXT"facebook-domain-verification=9ys81ito0y09pso4gjx02gh0q6q0jh"300
TXT"g2vcktkna819n6q4r0gkj48v2b"300
TXT"google-site-verification=DO2yDyX41te4r9rXwE8R_uYg3BsdmY0VIINLJrxtjQU"300
TXT"google-site-verification=bYx0PsEPX93eXnWSr7s_FI2DDdEzQjIngc0NbBSMG0Y"300
TXT"tu7q7safqivic8it7qca8v5387"300
TXT"v=spf1 ?include:_netblocks.mimecast.com include:amazonses.com ip4:52.128.40.188 include:us._netblocks.mimecast.com include:spf-465873.jangomail.com include:emsd1.com include:spf.protection.outlook.com include:sent-via.netsuite.com include:phxrelay.tbe.tal" "eo.net include:oracledelivery.com include:rp.oracleemaildelivery.com ~all"300
TXT"vn815nblbul5bo7h2ggumuno56"300
CAA0 issue "comodoca.com"300
CAA0 issue "digicert.com; cansignhttpexchanges=yes"300
CAA0 issue "godaddy.com"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 "godaddy.com"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 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.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: comodoca.com, digicert.com, godaddy.com, letsencrypt.org, pki.goog, ssl.com.