openx.com

Checked 22 October 2026, 10:10 UTC · via 8.8.8.8
!Passed with warnings
24 passed 2 warnings 0 failed 5 info

Registration

info

.com generic · Tucows Domains Inc. · expires 2027-11-07

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Tucows Domains Inc.
Registered
8 November 1996
Last changed
9 October 2026
Expires
7 November 2027
Status
active
Registry nameservers
ns-cloud-d1.googledomains.com, ns-cloud-d2.googledomains.com, ns-cloud-d3.googledomains.com, ns-cloud-d4.googledomains.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 2027-11-07 #3
    The registration is valid until 2027-11-07 (380 days).
  • i
    No transfer lock
    The domain has no transfer lock (status: active). A registrar lock protects against unauthorized transfers.
    #4
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns-cloud-d1.googledomains.com, ns-cloud-d2.googledomains.com, ns-cloud-d3.googledomains.com, ns-cloud-d4.googledomains.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-cloud-d1.googledomains.com, ns-cloud-d2.googledomains.com, ns-cloud-d3.googledomains.com, ns-cloud-d4.googledomains.com
NS in the zone
ns-cloud-d1.googledomains.com, ns-cloud-d2.googledomains.com, ns-cloud-d3.googledomains.com, ns-cloud-d4.googledomains.com
NameserverAddressesNetwork (AS)Glue
ns-cloud-d1.googledomains.com216.239.32.109 2001:4860:4802:32::6dAS15169 GOOGLE - Google LLC, US AS15169 GOOGLE - Google LLC, US2001:4860:4802:32::6d 216.239.32.109
ns-cloud-d2.googledomains.com216.239.34.109 2001:4860:4802:34::6dAS15169 GOOGLE - Google LLC, US AS15169 GOOGLE - Google LLC, US2001:4860:4802:34::6d 216.239.34.109
ns-cloud-d3.googledomains.com216.239.36.109 2001:4860:4802:36::6dAS15169 GOOGLE - Google LLC, US AS15169 GOOGLE - Google LLC, US2001:4860:4802:36::6d 216.239.36.109
ns-cloud-d4.googledomains.com216.239.38.109 2001:4860:4802:38::6dAS15169 GOOGLE - Google LLC, US AS15169 GOOGLE - Google LLC, US2001:4860:4802:38::6d 216.239.38.109

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-cloud-d1.googledomains.com, ns-cloud-d2.googledomains.com, ns-cloud-d3.googledomains.com, ns-cloud-d4.googledomains.com.
  • ✓ 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.
  • i
    One address family in one network
    all IPv6 addresses are in 2001:4860:4802::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS15169 (GOOGLE - Google LLC, US): 8 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

pass

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-cloud-d1.googledomains.com 216.239.32.109NOERROR, 11 ms, authoritativenoyes / yesrefused-
ns-cloud-d1.googledomains.com 2001:4860:4802:32::6dNOERROR, 12 ms, authoritativenoyes / yesrefused-
ns-cloud-d2.googledomains.com 216.239.34.109NOERROR, 13 ms, authoritativenoyes / yesrefused-
ns-cloud-d2.googledomains.com 2001:4860:4802:34::6dNOERROR, 10 ms, authoritativenoyes / yesrefused-
ns-cloud-d3.googledomains.com 216.239.36.109NOERROR, 41 ms, authoritativenoyes / yesrefused-
ns-cloud-d3.googledomains.com 2001:4860:4802:36::6dNOERROR, 42 ms, authoritativenoyes / yesrefused-
ns-cloud-d4.googledomains.com 216.239.38.109NOERROR, 11 ms, authoritativenoyes / yesrefused-
ns-cloud-d4.googledomains.com 2001:4860:4802:38::6dNOERROR, 11 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 8 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.
  • ✓ No version disclosed #17
    The nameservers don't reveal their software version.
  • ✓ 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

warn

serial 1 · primary ns-cloud-d1.googledomains.com

Found

Primary (MNAME)
ns-cloud-d1.googledomains.com
Contact (RNAME)
cloud-dns-hostmaster.google.com
Serial
1
Refresh / retry
21600 s / 3600 s
Expire
259200 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns-cloud-d1.googledomains.com (216.239.32.109)1
ns-cloud-d1.googledomains.com (2001:4860:4802:32::6d)1
ns-cloud-d2.googledomains.com (216.239.34.109)1
ns-cloud-d2.googledomains.com (2001:4860:4802:34::6d)1
ns-cloud-d3.googledomains.com (216.239.36.109)1
ns-cloud-d3.googledomains.com (2001:4860:4802:36::6d)1
ns-cloud-d4.googledomains.com (216.239.38.109)1
ns-cloud-d4.googledomains.com (2001:4860:4802:38::6d)1

Checks

  • ✓ Serial 1 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    expire 3d is shorter than 7d; secondaries stop answering too soon when the primary is down. Current values: refresh 6h, retry 1h, expire 3d, negative TTL 5m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns-cloud-d1.googledomains.com is one of the listed nameservers.
  • ✓ Contact cloud-dns-hostmaster@google.com #25
    The SOA RNAME cloud-dns-hostmaster.google.com means cloud-dns-hostmaster@google.com.
  • ✓ Counter serial #26
    The serial 1 is a plain counter.

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

43 records at the apex

Found

Read from
216.239.32.109:53
TypeValueTTL
SOAns-cloud-d1.googledomains.com. cloud-dns-hostmaster.google.com. 1 21600 3600 259200 30021600
NSns-cloud-d2.googledomains.com.21600
NSns-cloud-d3.googledomains.com.21600
NSns-cloud-d1.googledomains.com.21600
NSns-cloud-d4.googledomains.com.21600
A141.193.213.10300
A141.193.213.11300
MX10 aspmx3.googlemail.com.21600
MX10 aspmx2.googlemail.com.21600
MX5 alt2.aspmx.l.google.com.21600
MX5 alt1.aspmx.l.google.com.21600
MX1 aspmx.l.google.com.21600
TXT"docusign=c22b4f81-af16-442a-9afe-658df1799eb5"21600
TXT"jamf-site-verification=_MsVrnN6ZFLYEjGBnsrG-g"21600
TXT"openai-domain-verification=dv-1IhOtv6YV2UvCDoRmFGH5ryB"21600
TXT"zapier-domain-verification-challenge=5925cc72-0639-48b8-a50b-16b6c0f4b23d"21600
TXT"contractworksverify=1rNwT7o76yeyxi2"21600
TXT"pendo-domain-verification=lkr9H890mkMNLa6y1MtJxVTbTHw"21600
TXT"00D80000000c0B4=1TBUv00000001P7"21600
TXT"firebase=ox-identity-provider-prod"21600
TXT"atlassian-domain-verification=Zvfvr6USDT+kyU53znEI8FOE6bitXoMXiDK5PO9L3IThMkLslkyC93v1IUH9MxR0"21600
TXT"firebase=ox-identity-provider-devint"21600
TXT"docker-verification=6a35f8b7-602e-41bd-b769-86a8800a7348"21600
TXT"apple-domain-verification=tXcWpP0l6dIOgdAf"21600
TXT"dropbox-domain-verification=yg9jw7ecngla"21600
TXT"_cbc-idp-site-verification-1da51b=5b42a421f077ec35ac75191a09986f79863196f9d467248aba5e5df5b1d73f87"21600
TXT"firebase=ox-identity-provider-qa"21600
TXT"MS=ms13942281"21600
TXT"MS=ms11262019"21600
TXT"11262019"21600
TXT"ciscocidomainverification=4fa0ecc725781a4e3d3374df704adbb8409831666fabb8c159886102a62ff281"21600
TXT"8afcba1a1abb40739a99a30357efa1d4"21600
TXT"v=spf1 ip4:173.241.240.0/20 ip4:69.6.80.0/20 ip6:2620:6C::/42 include:_spf.google.com include:mktomail.com include:amazonses.com include:22798272.spf10.hubspotemail.net include:15five.com include:em9009.seismic.com include:_spf.firebasemail.com ~all"21600
TXT"anthropic-domain-verification-j6wcty=eWVy5hF0PC1yjrNKYwrOtPSp9"21600
TXT"_globalsign-domain-verification=O60kZMoa5mBPIKKqd9FSRXcGUhU6s3rzZHzWNLAlL7"21600
TXT"MS=17BA3B7CC02C0CDD3E9013ECEB3A011465498216"21600
CAA0 issuewild "digicert.com"21600
CAA0 issue "digicert.com"21600
CAA0 issue "letsencrypt.org"21600
CAA0 issue "pki.goog"21600
CAA0 issuewild "letsencrypt.org"21600
CAA0 issue "sectigo.com"21600
CAA0 issuewild "pki.goog"21600

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, MX 6h, NS 6h. The NS TTL at the parent is 2d and in the zone 6h; 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: digicert.com, letsencrypt.org, pki.goog, sectigo.com.