viacom.com

Checked 22 October 2026, 11:21 UTC · via 8.8.8.8
!Passed with warnings
27 passed 3 warnings 0 failed 1 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2027-07-11

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
12 July 1993
Last changed
9 June 2026
Expires
11 July 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
dns1.p09.nsone.net, dns2.p09.nsone.net, dns3.p09.nsone.net, dns4.p09.nsone.net, ns0004.secondary.cloudflare.com, ns0243.secondary.cloudflare.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 2027-07-11 #3
    The registration is valid until 2027-07-11 (261 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

pass

dns1.p09.nsone.net, dns2.p09.nsone.net, dns3.p09.nsone.net, dns4.p09.nsone.net, ns0004.secondary.cloudflare.com, ns0243.secondary.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
dns1.p09.nsone.net, dns2.p09.nsone.net, dns3.p09.nsone.net, dns4.p09.nsone.net, ns0004.secondary.cloudflare.com, ns0243.secondary.cloudflare.com
NS in the zone
dns1.p09.nsone.net, dns2.p09.nsone.net, dns3.p09.nsone.net, dns4.p09.nsone.net, ns0004.secondary.cloudflare.com, ns0243.secondary.cloudflare.com
NameserverAddressesNetwork (AS)Glue
dns1.p09.nsone.net198.51.44.9 2620:4d:4000:6259:7:9:0:1AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-
dns2.p09.nsone.net198.51.45.9 2a00:edc0:6259:7:9::2AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-
dns3.p09.nsone.net198.51.44.73 2620:4d:4000:6259:7:9:0:3AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-
dns4.p09.nsone.net198.51.45.73 2a00:edc0:6259:7:9::4AS62597 NSONE - NSONE Inc, US AS62597 NSONE - NSONE Inc, US-
ns0004.secondary.cloudflare.com162.159.32.5 2606:4700:51::a29f:2005AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US162.159.32.5 2606:4700:51::a29f:2005
ns0243.secondary.cloudflare.com162.159.33.118 2606:4700:59::a29f:2176AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US162.159.33.118 2606:4700:59::a29f:2176

Checks

  • ✓ 6 nameservers #6
    Delegated to dns1.p09.nsone.net, dns2.p09.nsone.net, dns3.p09.nsone.net, dns4.p09.nsone.net, ns0004.secondary.cloudflare.com, ns0243.secondary.cloudflare.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.
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 4 IPv4 /24s and 4 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 4 addresses; AS62597 (NSONE - NSONE Inc, US): 8 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .com, .net.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns1.p09.nsone.net 198.51.44.9NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns1.p09.nsone.net 2620:4d:4000:6259:7:9:0:1NOERROR, 6 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns2.p09.nsone.net 198.51.45.9NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns2.p09.nsone.net 2a00:edc0:6259:7:9::2NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns3.p09.nsone.net 198.51.44.73NOERROR, 6 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns3.p09.nsone.net 2620:4d:4000:6259:7:9:0:3NOERROR, 6 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns4.p09.nsone.net 198.51.45.73NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
dns4.p09.nsone.net 2a00:edc0:6259:7:9::4NOERROR, 4 ms, authoritativenoyes / yesrefused19dd46e347df36b70933bf2be8023258586586a9
ns0004.secondary.cloudflare.com 162.159.32.5NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
ns0004.secondary.cloudflare.com 2606:4700:51::a29f:2005NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
ns0243.secondary.cloudflare.com 162.159.33.118NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
ns0243.secondary.cloudflare.com 2606:4700:59::a29f:2176NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2

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: ns0004.secondary.cloudflare.com: "2026.10.2"; ns0243.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 1655183846 · primary dns1.p09.nsone.net

Found

Primary (MNAME)
dns1.p09.nsone.net
Contact (RNAME)
hostmaster.nsone.net
Serial
1655183846
Refresh / retry
600 s / 600 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
dns1.p09.nsone.net (198.51.44.9)1655183846
dns1.p09.nsone.net (2620:4d:4000:6259:7:9:0:1)1655183846
dns2.p09.nsone.net (198.51.45.9)1655183846
dns2.p09.nsone.net (2a00:edc0:6259:7:9::2)1655183846
dns3.p09.nsone.net (198.51.44.73)1655183846
dns3.p09.nsone.net (2620:4d:4000:6259:7:9:0:3)1655183846
dns4.p09.nsone.net (198.51.45.73)1655183846
dns4.p09.nsone.net (2a00:edc0:6259:7:9::4)1655183846
ns0004.secondary.cloudflare.com (162.159.32.5)1655183846
ns0004.secondary.cloudflare.com (2606:4700:51::a29f:2005)1655183846
ns0243.secondary.cloudflare.com (162.159.33.118)1655183846
ns0243.secondary.cloudflare.com (2606:4700:59::a29f:2176)1655183846

Checks

  • ✓ Serial 1655183846 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    refresh 10m is outside 20m–1d; retry 10m should be shorter than refresh 10m. Current values: refresh 10m, retry 10m, expire 14d, negative TTL 1h.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns1.p09.nsone.net is one of the listed nameservers.
  • ✓ Contact hostmaster@nsone.net #25
    The SOA RNAME hostmaster.nsone.net means hostmaster@nsone.net.
  • ✓ Timestamp serial #26
    The serial 1655183846 is a Unix timestamp (2022-06-14 05:17 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

67 records at the apex

Found

Read from
198.51.44.9:53
TypeValueTTL
SOAdns1.p09.nsone.net. hostmaster.nsone.net. 1655183846 600 600 1209600 360086400
NSdns1.p09.nsone.net.86400
NSdns2.p09.nsone.net.86400
NSdns3.p09.nsone.net.86400
NSdns4.p09.nsone.net.86400
NSns0004.secondary.cloudflare.com.86400
NSns0243.secondary.cloudflare.com.86400
A3.71.139.1533600
A3.126.5.1883600
A18.185.24.463600
AAAA2a05:d014:803:f30e:ffe5:90d1:736a:fcad3600
AAAA2a05:d014:803:f30c:505c:9738:13c:b7a53600
AAAA2a05:d014:803:f30a:4c8d:5530:dac2:1793600
MX10 mxa-00262c01.gslb.pphosted.com.300
MX10 mxb-00262c01.gslb.pphosted.com.300
TXT"google-site-verification=n0k-bfBDBAPyCB5go2LZA4nD_LqWEd7onzp0kDFR0H4"120
TXT"VyGrBx9bUYXO9M/Zn6o4DtnbmcIv9lOoyUb0t25PBDWauqRe7O3IJ0Ioqrd5rd9iGsAxyfE6dASH/vMuV/D00Q=="120
TXT"google-site-verification=HlGzi7CzMQ2ZYFTCDFWJnZFnI15_CAxjYuiZK9aUtXY"120
TXT"19f21803ba2d1c69f1f9c4cb6ff2d8e949fa0b25cf8c0fec3db59df034542121"120
TXT"adobe-idp-site-verification=289089f8-eab8-4f7a-8de4-d632fb7d4229"120
TXT"atlassian-domain-verification=E+wiTTQbdi+aIBlOe7MvMyDmxBdCed/oDG6hRZquh5QIu+JegSoM3VH8Fof+kOz6"120
TXT"google-site-verification=nzjo_3NLhjKa-6uxO6HhtCHTe0m7we76EJ5EdGPSuxM"120
TXT"v=spf1 include:_netblocks.viacom.com include:spf.protection.outlook.com include:servers.mcsv.net include:stspg-customer.com ~all"120
TXT"ggfq9mu1r1joj7lnimuljt2hmk"120
TXT"MS=ms95680233"120
TXT"status-page-domain-verification=pnddddgnflfm"120
TXT"nctx5Rr4nCSpfewpyTrp6+p3oSUyk7xq7eYTjYvPRnRhwCRfwu6V+gaucUVkuGN3qG8swJIm4q/DlxeoZPW+Kg=="120
TXT"vn1gi68uaf8o1o9m0ffc1p7rli"120
TXT"docusign=80eb0837-29a7-4e2f-80e5-82061d3ea058"120
TXT"onetrust-domain-verification=c4bb576d1c724d80856d8ddc76a697f6"120
TXT"docusign=a1d19e88-e755-421b-a54e-ab4ebd21ad53"120
TXT"onetrust-domain-verification=855458a481d24869ad7500509a1719ab"120
TXT"apple-domain-verification=pK7BGU8gMHV4yUq4"120
TXT"apple-domain-verification=K2eIby8WeI6PqT00"120
TXT"flexera-domain-verification-immhwetqiieywtmj"120
TXT"onetrust-domain-verification=b5f4d73b2c4644f1bee15be6b67d92dc"120
TXT"smartsheet-site-validation=e0As-vWcMWCMIHBgRlAiHWuzvdCuW--8"120
TXT"appspace-domain-verification=95717daa24b5c09519b505de173a1b8d2d0d37ec64cb70ce7d6fde2847c72bca"120
TXT"wiz-domain-verification=6fd13e7cdaff683d7d119656d141ce4e9caeec911c829518efb28e9acbf43323"120
TXT"to1dsaglljuemdpnbenbflcrge"120
TXT"4rkg50nzx89rdbv7tvzppvyx87yqf3bv"120
TXT"docker-verification=dfea4a1d-1959-4960-8733-55c2e1547f19"120
TXT" eudgtb2qf9l0tqr0gmq737hqv2 "120
TXT"google-site-verification=3iL95XuZmgXT5b7X-0pa67fWBDN5TowjJmqlxmBbs1Q"120
TXT"wombat-verification=3KwxVCQV1HEp-aRXRTKKaZ5G0frhk"120
TXT"ku4k4ttu80f0ad6puat57jvb3m"120
TXT"parallels-domain-verification=19f7e985539e42cca485ea9a8dc3dd94c6f9931d85d8423b8ecef69756834710"120
TXT"jamf-site-verification=XM-Tqeb3D0S9A0sfkH48tA"120
TXT" 3alfm4lqlr1nvigrjhpv947ku1 "120
CAA0 issue "letsencrypt.org"600
CAA0 issue "sectigo.com"600
CAA0 issue "godaddy.com"600
CAA0 issue "starfieldtech.com"600
CAA0 issue "comodoca.com"600
CAA0 issue "trust-provider.com"600
CAA0 issue "usertrust.com"600
CAA0 issue "digicert.com"600
CAA0 issue "amazon.com"600
CAA0 issuewild "letsencrypt.org"600
CAA0 issuewild "sectigo.com"600
CAA0 issuewild "godaddy.com"600
CAA0 issuewild "starfieldtech.com"600
CAA0 issuewild "comodoca.com"600
CAA0 issuewild "trust-provider.com"600
CAA0 issuewild "usertrust.com"600
CAA0 issuewild "digicert.com"600
CAA0 issuewild "amazon.com"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, AAAA 1h, MX 5m, NS 1d. The NS TTL at the parent is 2d and in the zone 1d; 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: letsencrypt.org, sectigo.com, godaddy.com, starfieldtech.com, comodoca.com, trust-provider.com, usertrust.com, digicert.com, amazon.com.