informatechtarget.com

Checked 22 October 2026, 09:20 UTC · via 8.8.8.8
!Passed with warnings
20 passed 5 warnings 0 failed 6 info

Registration

info

.com generic · DNC Holdings, Inc. · expires 2027-10-08

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
DNC Holdings, Inc.
Registered
8 October 2024
Last changed
24 August 2026
Expires
8 October 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns10.techtarget.com, ns11.techtarget.com, ns12.techtarget.com, ns13.techtarget.com, ns14.techtarget.com, ns15.techtarget.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 2027-10-08 #3
    The registration is valid until 2027-10-08 (351 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited, client update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

ns10.techtarget.com, ns11.techtarget.com, ns12.techtarget.com, ns13.techtarget.com, ns14.techtarget.com, ns15.techtarget.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns10.techtarget.com, ns11.techtarget.com, ns12.techtarget.com, ns13.techtarget.com, ns14.techtarget.com, ns15.techtarget.com
NS in the zone
ns10.techtarget.com, ns11.techtarget.com, ns12.techtarget.com, ns13.techtarget.com, ns14.techtarget.com, ns15.techtarget.com
NameserverAddressesNetwork (AS)Glue
ns10.techtarget.com96.45.80.1AS16552 DIGICERT - Tiggee LLC, US2600:180a:1001::1 96.45.80.1
ns11.techtarget.com46.31.236.1AS16552 DIGICERT - Tiggee LLC, US2600:180b:2001::1 46.31.236.1
ns12.techtarget.com43.247.170.1AS16552 DIGICERT - Tiggee LLC, US2600:180c:3001::1 43.247.170.1
ns13.techtarget.com96.45.81.1AS16552 DIGICERT - Tiggee LLC, US2600:180a:4001::1 96.45.81.1
ns14.techtarget.com46.31.237.1AS16552 DIGICERT - Tiggee LLC, US2600:180b:5001::1 46.31.237.1
ns15.techtarget.com43.247.171.1AS16552 DIGICERT - Tiggee LLC, US2600:180c:6001::1 43.247.171.1

Checks

  • ✓ 6 nameservers #6
    Delegated to ns10.techtarget.com, ns11.techtarget.com, ns12.techtarget.com, ns13.techtarget.com, ns14.techtarget.com, ns15.techtarget.com.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: ns10.techtarget.com (glue 2600:180a:1001::1, 96.45.80.1, zone 96.45.80.1); ns11.techtarget.com (glue 2600:180b:2001::1, 46.31.236.1, zone 46.31.236.1); ns12.techtarget.com (glue 2600:180c:3001::1, 43.247.170.1, zone 43.247.170.1); ns13.techtarget.com (glue 2600:180a:4001::1, 96.45.81.1, zone 96.45.81.1); ns14.techtarget.com (glue 2600:180b:5001::1, 46.31.237.1, zone 46.31.237.1); ns15.techtarget.com (glue 2600:180c:6001::1, 43.247.171.1, zone 43.247.171.1). Update the glue at your registrar.
    #8
  • ✓ 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 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS16552 (DIGICERT - Tiggee LLC, US): 6 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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

info

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns10.techtarget.com 96.45.80.1NOERROR, 3 ms, authoritativenoyes / yesrefused179812
ns11.techtarget.com 46.31.236.1NOERROR, 4 ms, authoritativenoyes / yesrefused105986
ns12.techtarget.com 43.247.170.1NOERROR, 3 ms, authoritativenoyes / yesrefused808515
ns13.techtarget.com 96.45.81.1NOERROR, 3 ms, authoritativenoyes / yesrefused179812
ns14.techtarget.com 46.31.237.1NOERROR, 3 ms, authoritativenoyes / yesrefused105986
ns15.techtarget.com 43.247.171.1NOERROR, 3 ms, authoritativenoyes / yesrefused808515

Checks

  • ✓ All respond #14
    All 6 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns10.techtarget.com: "179812"; ns11.techtarget.com: "105986"; ns12.techtarget.com: "808515"; ns13.techtarget.com: "179812"; ns14.techtarget.com: "105986"; ns15.techtarget.com: "808515".
    #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

warn

serial 2015010205 · primary ns11.constellix.com

Found

Primary (MNAME)
ns11.constellix.com
Contact (RNAME)
dns.constellix.com
Serial
2015010205
Refresh / retry
43200 s / 3600 s
Expire
1209600 s
Negative TTL
180 s

Serial per nameserver

NameserverSerial
ns10.techtarget.com (96.45.80.1)2015010205
ns11.techtarget.com (46.31.236.1)2015010205
ns12.techtarget.com (43.247.170.1)2015010205
ns13.techtarget.com (96.45.81.1)2015010205
ns14.techtarget.com (46.31.237.1)2015010205
ns15.techtarget.com (43.247.171.1)2015010205

Checks

  • ✓ Serial 2015010205 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    negative caching TTL (minimum) 3m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 12h, retry 1h, expire 14d, negative TTL 3m.
    #23
  • i
    Hidden master
    The primary nameserver ns11.constellix.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 dns@constellix.com #25
    The SOA RNAME dns.constellix.com means dns@constellix.com.
  • ✓ Date-based serial #26
    The serial 2015010205 follows the YYYYMMDDnn convention (2015-01-02).

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

25 records at the apex

Found

Read from
96.45.80.1:53
TypeValueTTL
SOAns11.constellix.com. dns.constellix.com. 2015010205 43200 3600 1209600 18086400
NSns13.techtarget.com.86400
NSns14.techtarget.com.86400
NSns15.techtarget.com.86400
NSns10.techtarget.com.86400
NSns11.techtarget.com.86400
NSns12.techtarget.com.86400
A104.18.12.241300
A104.18.13.241300
MX10 us-smtp-inbound-1.mimecast.com.298
MX20 us-smtp-inbound-2.mimecast.com.298
TXT"MS=ms18425799"1800
TXT"v=spf1 ip4:148.163.141.45 include:spf.protection.outlook.com include:us._netblocks.mimecast.com include:eu._netblocks.mimecast.com include:aspmx.sailthru.com -all"1800
TXT"0ed1fe018ac16efc5150644a1b98572768eb18424c"1800
TXT"adobe-idp-site-verification=82185eedfe556dff233f5816b08bef70344f6293d61a1832335bfbb9de2548fb"1800
TXT"google-site-verification=DrIUnAIp4PAo4FkVHD0PsN30vqnbzuKDNUPTqd7Vxeo"1800
TXT"yahoo-verification-key=C+LgbRGymlQCBxDoG2L2zH4fXoaFYWWY4lypdPZybqk="1800
TXT"dropbox-domain-verification=za3n1hypp6pd"1800
TXT"fastly-domain-delegation-4cfwRQE4-00561321-20251127"1800
TXT"atlassian-domain-verification=ow8hoanKlPK6PqVFiEXA7k4jnGbo3apXcEhEF19hGmS6HGw3JmSxbxmJRIvA8LLM"1800
TXT"atlassian-domain-verification=sRjOArl3CJxeea/8YAqLKRCacQg5UakXKDxOagGqaYidF0hTtppltmFqey47/JCZ"1800
TXT"google-site-verification=gLCXKjf1dgRKeL2KCGNiR_4ZQfDMU3En-2GOTb_XJJA"1800
TXT"box-domain-verification=8b8e3b363ee68d4d8ddb08f4f1334214ca3f25aeb7f96120fea284c10cb012f4"1800
TXT"_fqffusvsq4wgfrhg1t83l5au9xvjgmy"1800
TXT"smartsheet-site-validation=N4Jwq3ZtyBm8nhS5145Eck6N7KcbNuor"1800

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: MX (4m58s). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 1d; 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