warnerbros.com

Checked 22 October 2026, 11:23 UTC · via 8.8.8.8
!Passed with warnings
22 passed 4 warnings 0 failed 5 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2030-07-20

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
21 July 1995
Last changed
18 August 2025
Expires
20 July 2030
Status
client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
ns1-b2.warnerbros.com, ns2-b2.warnerbros.com, ns3-b2.warnerbros.com, ns4-b2.warnerbros.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 2030-07-20 #3
    The registration is valid until 2030-07-20 (1366 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

ns1-b2.warnerbros.com, ns2-b2.warnerbros.com, ns3-b2.warnerbros.com, ns4-b2.warnerbros.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1-b2.warnerbros.com, ns2-b2.warnerbros.com, ns3-b2.warnerbros.com, ns4-b2.warnerbros.com
NS in the zone
ns1-b2.warnerbros.com, ns2-b2.warnerbros.com, ns3-b2.warnerbros.com, ns4-b2.warnerbros.com
NameserverAddressesNetwork (AS)Glue
ns1-b2.warnerbros.com205.251.198.161AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.198.161
ns2-b2.warnerbros.com205.251.196.102AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.196.102
ns3-b2.warnerbros.com205.251.194.221AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.194.221
ns4-b2.warnerbros.com205.251.193.169AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.169

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1-b2.warnerbros.com, ns2-b2.warnerbros.com, ns3-b2.warnerbros.com, ns4-b2.warnerbros.com.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ Glue present and correct #8
    Glue is published for the nameservers inside the zone: ns1-b2.warnerbros.com, ns2-b2.warnerbros.com, ns3-b2.warnerbros.com, ns4-b2.warnerbros.com.
  • ✓ 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 4 IPv4 /24s and 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS16509 (AMAZON-02 - Amazon.com, Inc., US): 4 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

pass

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1-b2.warnerbros.com 205.251.198.161NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns2-b2.warnerbros.com 205.251.196.102NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns3-b2.warnerbros.com 205.251.194.221NOERROR, 90 ms, authoritativenoyes / yesrefused-
ns4-b2.warnerbros.com 205.251.193.169NOERROR, 9 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 4 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 2016070800 · primary ns1-b2.warnerbros.com

Found

Primary (MNAME)
ns1-b2.warnerbros.com
Contact (RNAME)
wbol-hostmaster.warnerbros.com
Serial
2016070800
Refresh / retry
3600 s / 1800 s
Expire
604800 s
Negative TTL
60 s

Serial per nameserver

NameserverSerial
ns1-b2.warnerbros.com (205.251.198.161)2016070800
ns2-b2.warnerbros.com (205.251.196.102)2016070800
ns3-b2.warnerbros.com (205.251.194.221)2016070800
ns4-b2.warnerbros.com (205.251.193.169)2016070800

Checks

  • ✓ Serial 2016070800 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    negative caching TTL (minimum) 1m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 1h, retry 30m, expire 7d, negative TTL 1m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1-b2.warnerbros.com is one of the listed nameservers.
  • ✓ Contact wbol-hostmaster@warnerbros.com #25
    The SOA RNAME wbol-hostmaster.warnerbros.com means wbol-hostmaster@warnerbros.com.
  • ✓ Date-based serial #26
    The serial 2016070800 follows the YYYYMMDDnn convention (2016-07-08).

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

60 records at the apex

Found

Read from
205.251.198.161:53
TypeValueTTL
SOAns1-b2.warnerbros.com. wbol-hostmaster.warnerbros.com. 2016070800 3600 1800 604800 6060
NSns1-b2.warnerbros.com.60
NSns2-b2.warnerbros.com.60
NSns3-b2.warnerbros.com.60
NSns4-b2.warnerbros.com.60
A34.209.132.18560
A54.190.103.18360
MX10 warnerbros-com.mail.protection.outlook.com.300
TXT"0ed1fe018aae5dd81c652344dcb065ca2312180b80"60
TXT"72EkDFeGXhc+VgC0bi2v/tnHpJl1GUnzEhlLOzmp+9sDEZkSYHbcmgzLvlVnqTAz6NEY1TBGWUffTB0SZJN3MQ=="60
TXT"MS=ms59831392"60
TXT"MS=ms59919946"60
TXT"MS=ms96313732"60
TXT"Sendinblue-code:622c1be246bc8d827b30011e51c82bdf"60
TXT"V+uwsvGdUArar7eHH7GbotE5D2kLstpQV8gEUjz1KFs="60
TXT"ZOOM_verify_rc0H6SLsRCSDRFw5qXv3Hw"60
TXT"_globalsign-domain-verification=6CDdLtVwHrk066tD4Xbq29yhJjTS4_unPsALufFonv"60
TXT"_globalsign-domain-verification=9DFu7NnD5dqNyuB7wxUqp14OnM91Uq4Sdv8vhZXRXp"60
TXT"_globalsign-domain-verification=ADZUnVKw98p4DPmug8W_KRaEPago48owN9LVPwpg5z"60
TXT"_globalsign-domain-verification=EGEhXwtg05w4nGO-Rxy0CvNpYCh4KoOeX_AS-6rEb4"60
TXT"_globalsign-domain-verification=Ff1hJCuX2PZj_n3x2TbTN6HVeBp1HOwomqdcZ_2XHE"60
TXT"_globalsign-domain-verification=ITMkvaf4p5GuAk7L76Q1TEVy8xgl26mOFWAjAXN_hz"60
TXT"_globalsign-domain-verification=Y9D5MQXc5KY3jPX7w5T9Tr3CQVSbvjE6qeB726wKft"60
TXT"_globalsign-domain-verification=aPr7i88XPLxj1-MhUNFQGJqsqtpL2_9oDusQ4y-zFF"60
TXT"_globalsign-domain-verification=x1QfA3tVurxFx35XbJEbQ_caRemU9O58jHc80Tqs2D"60
TXT"adobe-idp-site-verification=b3224707-0342-4a07-8079-73642e727982"60
TXT"amazonses:+b7py5LNC8H1iw8OCX39EKNCTLLHSmZciUSSBZPRpOE="60
TXT"amazonses:HQmmtAosT1aZ/xZ96CsCg4mh3DAJUIo3rz5o58ac37k="60
TXT"amazonses:kM9IhS5dne3/LFzSUma/cRNetVRve3pDt9/pU4gXPfs="60
TXT"amazonses:w2U+furZRKJN3ynyffQYTQJeTqASSRHvuzKC/W8J9uM="60
TXT"anthropic-domain-verification-sswk6t=vtFElBAyHGlq0l5tBX1uEilAW"60
TXT"apple-domain-verification=ja75pc5TZ0c2wTRS"60
TXT"apple-domain-verification=l9lPi6DEMaNQYGNY"60
TXT"atlassian-domain-verification=joqe6L8dNi+aisGbB1XHQa0pDc53V2l0GQQRUtLEcr2997x0+rtrAA5Zw+UgQw3u"60
TXT"cisco-ci-domain-verification=c3ad9d7580211f001c2b386c9c02fd2ad2c93344307fc4a70eebbc9fcb68e0c"60
TXT"cloudhealth=2f774d15-daf8-4557-9950-8c87cda17343"60
TXT"docker-verification=0ff35b43-9b0d-4381-bf15-25ec5253a8c2"60
TXT"docusign=baaef1e3-5860-4821-8f16-7c3d353a1468"60
TXT"docusign=e9e2f975-35c7-40c8-9205-78bab5277445"60
TXT"extensis-domain-verification=79d2b9bb-7b5f-4ae2-a930-373e740a7fc4"60
TXT"facebook-domain-verification=8k2003yb5y3vbi0esj7bae5xlztz13"60
TXT"flexera-domain-verification-lztnotcdbwguwgkf"60
TXT"google-site-verification=BuC7LlG9McdtJjYoGT7YFBebO2ab0xoL154k4WPfBNY"60
TXT"google-site-verification=DWhz0yMAJZCSVpTmE2-LIf-pX5mt_VsVizm5E9ci528"60
TXT"google-site-verification=R46z8Qva5MgO_-4PR1y-NDOUlG8wUFs-iOeFR9gxvN8"60
TXT"google-site-verification=ZZfH6ahWHlyFeGJgai2ecZle6CAdiKdqrrJeDIB2hts"60
TXT"google-site-verification=bgeerL9owPTmHHqbCgvXoXiobYhb_XeYen5-L-G33_E"60
TXT"google-site-verification=fryTmCHWRt9FQl9niLBxUU8a-_7hPvXbh9auWJ96VmI"60
TXT"miro-verification=1e01f8da769be1241fceefd9abf2c317dcd68323"60
TXT"mongodb-site-verification=Ha5xl2z9Plb3g8XipqMOLmzZIKDqhiSg"60
TXT"postman-domain-verification=33c1fb762fe64a2edca785b9dd3c03813b8b81357f54e97177b8975566b4420838b42ef6c429020ce8cf8844e612ef3295781699bbe3b5f3bb940e18035cf659"60
TXT"postman-domain-verification=aca557d966b0c1c3e4fd781e98abf5f5059f8644dfc034de428d14a834b3f4af10b11ca781e88fd5369c3355f375bd53b03c6f8e01bbf4a00055b9324c300e5e"60
TXT"segment-site-verification=yewofkMKLsoHWbvTypmgnEAy17sybBys"60
TXT"shopify-verification-code=KbRDGfHKrT5FUhBG0Knelto4hGfl22"60
TXT"smartsheet-site-validation=7lJ8CGecMtM4eJfHqvLdTNW2GoqUoPKf"60
TXT"smartsheet-site-validation=A3ikdCy5MN_-JUR4IUwVglUCnwHRfM4D"60
TXT"smartsheet-site-validation=LVtXGDmXTtP4YqrUFy_FEKK8xB5E0xc4"60
TXT"v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all"60
TXT"v=spf1 include:warnerbros.com._nspf.vali.email include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email ~all"60
TXT"wiz-domain-verification=f169b3087fa1100232f46d958e368d3fe5cf9fec6285c6a12b9d1693b7ca272f"60

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), NS (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 1m; resolvers may use either.
    #32
  • ✓ 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
  • 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