htc.com

Checked 22 October 2026, 09:13 UTC · via 8.8.8.8
✗Problems found
22 passed 4 warnings 1 failed 4 info

Registration

info

.com generic · Net-Chinese Co., Ltd. · expires 2035-05-17

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Net-Chinese Co., Ltd.
Registered
16 May 1990
Last changed
27 March 2026
Expires
17 May 2035
Status
client delete prohibited, client transfer prohibited
Registry nameservers
a1-244.akam.net, a22-67.akam.net, a24-64.akam.net, a5-65.akam.net, a6-66.akam.net, a9-67.akam.net
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 2035-05-17 #3
    The registration is valid until 2035-05-17 (3128 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

fail

a1-244.akam.net, a22-67.akam.net, a24-64.akam.net, a5-65.akam.net, a6-66.akam.net, a9-67.akam.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a1-244.akam.net, a22-67.akam.net, a24-64.akam.net, a5-65.akam.net, a6-66.akam.net, a9-67.akam.net
NS in the zone
184.85.248.67, 193.108.91.244, 2.16.130.64, 23.211.133.66, 23.211.61.67, 95.100.168.65
NameserverAddressesNetwork (AS)Glue
184.85.248.67 (zone only)(does not resolve)-
193.108.91.244 (zone only)(does not resolve)-
2.16.130.64 (zone only)(does not resolve)-
23.211.133.66 (zone only)(does not resolve)-
23.211.61.67 (zone only)(does not resolve)-
95.100.168.65 (zone only)(does not resolve)-
a1-244.akam.net (parent only)193.108.91.244 2600:1401:2::f4AS20940 AKAMAI-ASN1 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a22-67.akam.net (parent only)23.211.61.67 2600:1480:7800::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a24-64.akam.net (parent only)2.16.130.64 2600:1480:9800::40AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a5-65.akam.net (parent only)95.100.168.65 2600:1480:b000::41AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a6-66.akam.net (parent only)23.211.133.66 2600:1401:1::42AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-
a9-67.akam.net (parent only)184.85.248.67 2a02:26f0:117::43AS21342 AKAMAI-ASN2 - Akamai International B.V., NL AS21342 AKAMAI-ASN2 - Akamai International B.V., NL-

Checks

  • ✓ 6 nameservers #6
    Delegated to a1-244.akam.net, a22-67.akam.net, a24-64.akam.net, a5-65.akam.net, a6-66.akam.net, a9-67.akam.net.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: a1-244.akam.net, a22-67.akam.net, a24-64.akam.net, a5-65.akam.net, a6-66.akam.net, a9-67.akam.net; only in the zone: 184.85.248.67, 193.108.91.244, 2.16.130.64, 23.211.133.66, 23.211.61.67, 95.100.168.65. a1-244.akam.net, a22-67.akam.net, a24-64.akam.net, a5-65.akam.net, a6-66.akam.net, a9-67.akam.net report NS 184.85.248.67 193.108.91.244 2.16.130.64 23.211.133.66 23.211.61.67 95.100.168.65.
    #7
  • ✓ No glue needed #8
    All nameservers are outside the zone, so no glue records are needed.
  • ✗
    Nameserver names don't resolve
    These nameservers have no A or AAAA record, so they can't be reached (lame delegation): 184.85.248.67, 193.108.91.244, 2.16.130.64, 23.211.133.66, 23.211.61.67, 95.100.168.65.
    #9
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 6 IPv4 /24s and 6 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS20940 (AKAMAI-ASN1 - Akamai International B.V., NL): 1 address; AS21342 (AKAMAI-ASN2 - Akamai International B.V., NL): 11 addresses.
  • i
    All nameserver names under .net
    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
a1-244.akam.net 193.108.91.244NOERROR, 3 ms, authoritativenoyes / yesrefused41824.9
a1-244.akam.net 2600:1401:2::f4NOERROR, 4 ms, authoritativenoyes / yesrefused41824.7
a22-67.akam.net 23.211.61.67NOERROR, 3 ms, authoritativenoyes / yesrefused48878.31
a22-67.akam.net 2600:1480:7800::43NOERROR, 4 ms, authoritativenoyes / yesrefused48878.26
a24-64.akam.net 2.16.130.64NOERROR, 3 ms, authoritativenoyes / yesrefused48878.30
a24-64.akam.net 2600:1480:9800::40NOERROR, 4 ms, authoritativenoyes / yesrefused48878.27
a5-65.akam.net 95.100.168.65NOERROR, 5 ms, authoritativenoyes / yesrefused41824.6
a5-65.akam.net 2600:1480:b000::41NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
a6-66.akam.net 23.211.133.66NOERROR, 4 ms, authoritativenoyes / yesrefused48878.32
a6-66.akam.net 2600:1401:1::42NOERROR, 3 ms, authoritativenoyes / yesrefused48878.32
a9-67.akam.net 184.85.248.67NOERROR, 4 ms, authoritativenoyes / yesrefused41824.8
a9-67.akam.net 2a02:26f0:117::43NOERROR, 4 ms, authoritativenoyes / yesrefused41824.6

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: a1-244.akam.net: "41824.9"; a1-244.akam.net: "41824.7"; a22-67.akam.net: "48878.31"; a22-67.akam.net: "48878.26"; a24-64.akam.net: "48878.30"; a24-64.akam.net: "48878.27"; a5-65.akam.net: "41824.6"; a5-65.akam.net: "41824.8"; a6-66.akam.net: "48878.32"; a9-67.akam.net: "41824.8"; a9-67.akam.net: "41824.6". 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

info

serial 2025112336 · primary htctpe1.htc.com

Found

Primary (MNAME)
htctpe1.htc.com
Contact (RNAME)
hostamaster.htc.com
Serial
2025112336
Refresh / retry
3600 s / 600 s
Expire
1209600 s
Negative TTL
43200 s

Serial per nameserver

NameserverSerial
a1-244.akam.net (193.108.91.244)2025112336
a1-244.akam.net (2600:1401:2::f4)2025112336
a22-67.akam.net (23.211.61.67)2025112336
a22-67.akam.net (2600:1480:7800::43)2025112336
a24-64.akam.net (2.16.130.64)2025112336
a24-64.akam.net (2600:1480:9800::40)2025112336
a5-65.akam.net (95.100.168.65)2025112336
a5-65.akam.net (2600:1480:b000::41)2025112336
a6-66.akam.net (23.211.133.66)2025112336
a6-66.akam.net (2600:1401:1::42)2025112336
a9-67.akam.net (184.85.248.67)2025112336
a9-67.akam.net (2a02:26f0:117::43)2025112336

Checks

  • ✓ Serial 2025112336 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 10m, expire 14d, negative TTL 12h.
  • i
    Hidden master
    The primary nameserver htctpe1.htc.com is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact hostamaster@htc.com #25
    The SOA RNAME hostamaster.htc.com means hostamaster@htc.com.
  • ✓ Date-based serial #26
    The serial 2025112336 follows the YYYYMMDDnn convention (2025-11-23).

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

warn

40 records at the apex

Found

Read from
193.108.91.244:53
TypeValueTTL
SOAhtctpe1.htc.com. hostamaster.htc.com. 2025112336 3600 600 1209600 43200300
NS95.100.168.65.43200
NS2.16.130.64.43200
NS184.85.248.67.43200
NS193.108.91.244.43200
NS23.211.61.67.43200
NS23.211.133.66.43200
A2.16.183.2420
A2.16.183.2320
MX10 htc-com.mail.protection.outlook.com.43200
TXT"brevo-code:963297840d976ff04cbba467e8e4052a"300
TXT"MS=ms23993478"300
TXT"atlassian-domain-verification=0BmjOdz6oXGEYlkEjIyLHRwAMV1ZIs/NdDVXLQyTQbF05Hudoxu61KlC2qJ1BWLc"300
TXT"atlassian-domain-verification=IVZ9ULvD1uRKMJwrNKOSqTHnPGkzYmQmwvG//oIi62a60WpTu1W0j4Am9iduQQvM"300
TXT"IWYQYGERGH7JO9WZJZEKC2OLZ3QEX6MVUY1BGX34"300
TXT"x0qxr048rnpnh535zmjt5glbp05xw0nj"300
TXT"3UFqUJo-WEJBjevtLXqo-tgZ3ZqVaXwKK3Fs6g9Ho74"300
TXT"apple-domain-verification=GsPvEmk2sKINMvGO"300
TXT"953ac6cec84c0cf7727fe69e8b30f2b7d3ac6f0a1ab090d675764c70e6b1da"300
TXT"google-site-verification=x7OQNleiF2CxoREBaOvFim32r0eXcuLyYmvFifQID2M"300
TXT"anthropic-domain-verification-7qfc1x=FP9XDZZvZ3y4tm6dNhDv9OHCc"300
TXT"_mnmir5uex3e7jdbmtc47ktu7nnspq49"300
TXT"gjv982dm2lltm3ythbs1k02bs42gdyd9"300
TXT"google-site-verification=ReA9xGal4d1zkyG2MPhuUUM9bgHDzcq82OJ_WC4TLhw"300
TXT"trend-micro-v1-domain-verification.d1a6481d484ac92a49aaff55cfccc7c5=7d5908fb-aae1-4f18-8316-614ea05a5532"300
TXT"v=spf1 include:spf.protection.outlook.com include:_spf.htc.com include:u15693887.wl138.sendgrid.net include:mail.zendesk.com -all"300
TXT"lahOYflcUAbuwkFKilJu7VnQMRwEZWYoEGS4qI2mr6o"300
TXT"google-site-verification=28lNmVFXSMPIuiXI-w9B7Nej6zLfSwU841sMWcjG4sc"300
TXT"lVJ8k4Pb2HV/zLX+1chYG7UyxZDyuoXbKZmgR+OwMfjh8n7rXzb/MrE8HfvyF4xaM8FsIlofZ1TgOsSdibhlUw=="300
TXT"google-site-verification=u9jluNO7cZ7FmyuX-DIM1bxa2r5QFg6XEbEWFxxcGWo"300
TXT"google-site-verification=oIcg4GSTZr_Cemb7b6nf9Rk9eWaVyt2to9rQyJwpxVA"300
TXT"google-site-verification=HO5VSEbXfRuQ2xkgb8slQnKKZRwyiD0LsN9uYlP3Cao"300
TXT"_pdhnasdobtrg2fxy9pl99xfehlqm44b"300
TXT"google-site-verification=lWy04yQWc7efqJgbaLuFhcvP9Qsru2SdpwALZ1wh1NM"300
TXT"EUycl1AU_CpqTVNDR9LATk6DWM_VdGWF3_CaZ1qa4P8"300
TXT"docusign=1bb08184-c42b-4fef-a2e9-dce86d40cf83"300
TXT"google-site-verification=uQm69-JagAMP7CtovwILyO-OhRq-Y7auEILPPdVIH5g"300
TXT"z6tns9jynrn2xx0n0ygxr7t1kwcjck77"300
TXT"google-site-verification=KXUQ5g7kNeBg3H9NFSAg6524n5_W4ki2LtF1m7OMvS0"300
TXT"LBT6R9MFDX9IWNYNAW4VGVDVJCFN9792M8CJ203T"300

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (20s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 12h; resolvers may use either.
    #32
  • ✓ 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