iheart.com

Checked 22 October 2026, 09:15 UTC · via 8.8.8.8
!Passed with warnings
26 passed 4 warnings 0 failed 1 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2027-01-07

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
7 January 1999
Last changed
6 December 2025
Expires
7 January 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns0121.secondary.cloudflare.com, ns0237.secondary.cloudflare.com, pdns196.ultradns.biz, pdns196.ultradns.com, pdns196.ultradns.info, pdns196.ultradns.net, pdns196.ultradns.org
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 2027-01-07 #3
    The registration is valid until 2027-01-07 (76 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

ns0121.secondary.cloudflare.com, ns0237.secondary.cloudflare.com, pdns196.ultradns.biz, pdns196.ultradns.com, pdns196.ultradns.info, pdns196.ultradns.net, pdns196.ultradns.org

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns0121.secondary.cloudflare.com, ns0237.secondary.cloudflare.com, pdns196.ultradns.biz, pdns196.ultradns.com, pdns196.ultradns.info, pdns196.ultradns.net, pdns196.ultradns.org
NS in the zone
pdns196.ultradns.biz, pdns196.ultradns.co.uk, pdns196.ultradns.com, pdns196.ultradns.info, pdns196.ultradns.net, pdns196.ultradns.org
NameserverAddressesNetwork (AS)Glue
ns0121.secondary.cloudflare.com (parent only)162.159.32.122 2606:4700:51::a29f:207aAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US162.159.32.122 2606:4700:51::a29f:207a
ns0237.secondary.cloudflare.com (parent only)162.159.33.112 2606:4700:59::a29f:2170AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US162.159.33.112 2606:4700:59::a29f:2170
pdns196.ultradns.biz156.154.66.196 2610:a1:1015::e8AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns196.ultradns.co.uk (zone only)156.154.69.196 2610:a1:1017::e8AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns196.ultradns.com156.154.64.196 2001:502:f3ff::e8AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US156.154.64.196 2001:502:f3ff::e8
pdns196.ultradns.info156.154.68.196 2610:a1:1016::e8AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns196.ultradns.net156.154.65.196 2610:a1:1014::e8AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-
pdns196.ultradns.org156.154.67.196 2001:502:4612::e8AS12008 VERCARA - Vercara, LLC, US AS12008 VERCARA - Vercara, LLC, US-

Checks

  • ✓ 7 nameservers #6
    Delegated to ns0121.secondary.cloudflare.com, ns0237.secondary.cloudflare.com, pdns196.ultradns.biz, pdns196.ultradns.com, pdns196.ultradns.info, pdns196.ultradns.net, pdns196.ultradns.org.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: ns0121.secondary.cloudflare.com, ns0237.secondary.cloudflare.com; only in the zone: pdns196.ultradns.co.uk. ns0121.secondary.cloudflare.com, ns0237.secondary.cloudflare.com, pdns196.ultradns.biz, pdns196.ultradns.co.uk, pdns196.ultradns.com, pdns196.ultradns.info, pdns196.ultradns.net, pdns196.ultradns.org report NS pdns196.ultradns.biz pdns196.ultradns.co.uk pdns196.ultradns.com pdns196.ultradns.info pdns196.ultradns.net pdns196.ultradns.org.
    #7
  • ✓ 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 8 IPv4 /24s and 8 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS12008 (VERCARA - Vercara, LLC, US): 12 addresses; AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 4 addresses.
  • ✓ Nameserver names under 5 TLDs #12
    Nameserver names use the TLDs .biz, .com, .info, .net, .org.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

16 of 16 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns0121.secondary.cloudflare.com 162.159.32.122NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
ns0121.secondary.cloudflare.com 2606:4700:51::a29f:207aNOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ns0237.secondary.cloudflare.com 162.159.33.112NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
ns0237.secondary.cloudflare.com 2606:4700:59::a29f:2170NOERROR, 17 ms, authoritativenoyes / yesrefused2026.10.2
pdns196.ultradns.biz 156.154.66.196NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns196.ultradns.biz 2610:a1:1015::e8NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns196.ultradns.co.uk 156.154.69.196NOERROR, 13 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns196.ultradns.co.uk 2610:a1:1017::e8NOERROR, 13 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns196.ultradns.com 156.154.64.196NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns196.ultradns.com 2001:502:f3ff::e8NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns196.ultradns.info 156.154.68.196NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns196.ultradns.info 2610:a1:1016::e8NOERROR, 4 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns196.ultradns.net 156.154.65.196NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns196.ultradns.net 2610:a1:1014::e8NOERROR, 3 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns196.ultradns.org 156.154.67.196NOERROR, 31 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver
pdns196.ultradns.org 2001:502:4612::e8NOERROR, 32 ms, authoritativenoyes / yesrefusedUltraDNS Nameserver

Checks

  • ✓ All respond #14
    All 16 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: ns0121.secondary.cloudflare.com: "2026.10.2"; ns0237.secondary.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

warn

serial 2023034171 · primary pdns196.ultradns.com

Found

Primary (MNAME)
pdns196.ultradns.com
Contact (RNAME)
sre.iheartmedia.com
Serial
2023034171
Refresh / retry
900 s / 86400 s
Expire
86400 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns0121.secondary.cloudflare.com (162.159.32.122)2023034171
ns0121.secondary.cloudflare.com (2606:4700:51::a29f:207a)2023034171
ns0237.secondary.cloudflare.com (162.159.33.112)2023034171
ns0237.secondary.cloudflare.com (2606:4700:59::a29f:2170)2023034171
pdns196.ultradns.biz (156.154.66.196)2023034171
pdns196.ultradns.biz (2610:a1:1015::e8)2023034171
pdns196.ultradns.co.uk (156.154.69.196)2023034171
pdns196.ultradns.co.uk (2610:a1:1017::e8)2023034171
pdns196.ultradns.com (156.154.64.196)2023034171
pdns196.ultradns.com (2001:502:f3ff::e8)2023034171
pdns196.ultradns.info (156.154.68.196)2023034171
pdns196.ultradns.info (2610:a1:1016::e8)2023034171
pdns196.ultradns.net (156.154.65.196)2023034171
pdns196.ultradns.net (2610:a1:1014::e8)2023034171
pdns196.ultradns.org (156.154.67.196)2023034171
pdns196.ultradns.org (2001:502:4612::e8)2023034171

Checks

  • ✓ Serial 2023034171 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 15m is outside 20m–1d; retry 1d should be shorter than refresh 15m; expire 1d is shorter than 7d; secondaries stop answering too soon when the primary is down; expire 1d must be longer than refresh + retry. Current values: refresh 15m, retry 1d, expire 1d, negative TTL 1d.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver pdns196.ultradns.com is one of the listed nameservers.
  • ✓ Contact sre@iheartmedia.com #25
    The SOA RNAME sre.iheartmedia.com means sre@iheartmedia.com.
  • ✓ Timestamp serial #26
    The serial 2023034171 is a Unix timestamp (2034-02-08 17:56 UTC).

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

54 records at the apex

Found

Read from
162.159.32.122:53
TypeValueTTL
SOApdns196.ultradns.com. sre.iheartmedia.com. 2023034171 900 86400 86400 864001800
NSpdns196.ultradns.org.1800
NSpdns196.ultradns.com.1800
NSpdns196.ultradns.biz.1800
NSpdns196.ultradns.co.uk.1800
NSpdns196.ultradns.net.1800
NSpdns196.ultradns.info.1800
A151.101.64.6586400
A151.101.128.6586400
A151.101.0.6586400
A151.101.192.6586400
MX1 ASPMX.L.GOOGLE.com.21600
MX10 ALT3.ASPMX.L.GOOGLE.com.21600
MX10 ALT4.ASPMX.L.GOOGLE.com.21600
MX5 ALT1.ASPMX.L.GOOGLE.com.21600
MX5 ALT2.ASPMX.L.GOOGLE.com.21600
TXT"_8aw1w0v4f8dfcw4coehxlbeu0lpzgxw"60
TXT"_dyg98hnit1xbhhko8z8xaknl64knr48"60
TXT"_globalsign-domain-verification=0DuSsjDQZqNojSLYgubrV2cFBHjqsc6Ys64dxuGNmK"60
TXT"_globalsign-domain-verification=3NjO4MTWauDfoFLenHAdtYNJugb1dUhcTjzveEaRlD"60
TXT"_globalsign-domain-verification=5_rjWN2tj9-5abba8aZJedax0ElXvTJweWmisysoRn"60
TXT"_globalsign-domain-verification=9Xqu2bonefjuoUF-XmyjAptAfuE-yStJz6wy9UnH-C"60
TXT"_globalsign-domain-verification=GKQxs_x8dYhPYSse4qFCmoTcpa0iNZRlq94zj_rSZz"60
TXT"_globalsign-domain-verification=GXpUUS49HB9rYWZEmxJFtZdS61weLMlf91w9Dn-5O0"60
TXT"_globalsign-domain-verification=O81xyb7YxpdGeHWkniit_VBT4vTXz9__NFrNMoTwFg"60
TXT"_globalsign-domain-verification=OYfE_CcZQWFlEEOrR5yVCfCtmiQrm0bBdyUAJyg3qE"60
TXT"_globalsign-domain-verification=PNHrw0HP0dyqhb9jKVYye4MR49sVKcZt2vcZG-C7hJ"60
TXT"_globalsign-domain-verification=RQDNePcsBhiwiaGaUPKwwHamCQ-z-4EYJYovKcrwnK"60
TXT"_globalsign-domain-verification=hif_fvCwz5dyl9ZePmzAgUQwJ5MREtuTErUOLtyTve"60
TXT"_globalsign-domain-verification=jC79AL6jQMOo0_WuOPfUMCdwf0DdoS7HTwQTNCRcqa"60
TXT"adobe-idp-site-verification=b7417ed1-3e0b-4349-aaea-1d2ce50df8a1"60
TXT"facebook-domain-verification=3e1i2n9vfc1x2rwk3g4ufvc9t9qk69"60
TXT"google-site-verification=33v6HJw2o8cs7B7RhtG0i3eYrd_nU9-bsnewExsHyls"60
TXT"google-site-verification=fILVA7r_w_Zfg9D2NQpBpJxXLIv50RGc11M1ux--Rz8"60
TXT"google-site-verification=p2FWrUKxtwBmQgHV4CjD80oKdZZBjmMNByoWvZMsYso"60
TXT"google-site-verification=z-Ah2_PiN0t96l0dHDYP_9NOxat5DC5alquXgscboX0"60
TXT"proxy-ssl.webflow.com"60
TXT"tollbit-domain-verification=216394359d05a3916849d2e98043501b08ef65e32064b259d3986ae04d23cb4c"60
TXT"v=spf1 ip4:207.230.136.140/29 ip4:207.230.157.126/29 mx a a:out-smtp.criticalmassmedia.com a:out-smtp.lob-hosting.com include:sendgrid.net include:_spf.google.com include:spf.mandrillapp.com include:mail.zendesk.com ~all"60
CAA0 issue "amazon.com"60
CAA0 issue "amazonaws.com"60
CAA0 issue "amazontrust.com"60
CAA0 issue "awstrust.com"60
CAA0 issue "digicert.com"60
CAA0 issue "globalsign.com"60
CAA0 issue "letsencrypt.org"60
CAA0 issue "pki.goog"60
CAA0 issuewild "amazon.com"60
CAA0 issuewild "amazonaws.com"60
CAA0 issuewild "amazontrust.com"60
CAA0 issuewild "awstrust.com"60
CAA0 issuewild "digicert.com"60
CAA0 issuewild "globalsign.com"60
CAA0 issuewild "letsencrypt.org"60

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, MX 6h, NS 30m. The NS TTL at the parent is 2d and in the zone 30m; 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: amazon.com, amazonaws.com, amazontrust.com, awstrust.com, digicert.com, globalsign.com, letsencrypt.org, pki.goog.