verizonmedia.com

Checked 22 October 2026, 11:21 UTC · via 8.8.8.8
!Passed with warnings
25 passed 1 warning 0 failed 5 info

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2027-04-03

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
3 April 2000
Last changed
30 March 2026
Expires
3 April 2027
Status
client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
ns1.yahoo.com, ns2.yahoo.com, ns3.yahoo.com, ns4.yahoo.com, ns5.yahoo.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 2027-04-03 #3
    The registration is valid until 2027-04-03 (163 days).
  • ✓ Transfer locked #4
    Registry status: client transfer 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

info

ns1.yahoo.com, ns2.yahoo.com, ns3.yahoo.com, ns4.yahoo.com, ns5.yahoo.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.yahoo.com, ns2.yahoo.com, ns3.yahoo.com, ns4.yahoo.com, ns5.yahoo.com
NS in the zone
ns1.yahoo.com, ns2.yahoo.com, ns3.yahoo.com, ns4.yahoo.com, ns5.yahoo.com
NameserverAddressesNetwork (AS)Glue
ns1.yahoo.com68.180.131.16 2001:4998:1b0::7961:686f:6f21AS10880 YAHOO-AN2 - Yahoo Holdings Inc., US AS10880 YAHOO-AN2 - Yahoo Holdings Inc., US2001:4998:1b0::7961:686f:6f21 68.180.131.16
ns2.yahoo.com68.142.255.16 2001:4998:1c0::7961:686f:6f21AS7280 YAHOO-FC - Yahoo Holdings Inc., US AS7280 YAHOO-FC - Yahoo Holdings Inc., US2001:4998:1c0::7961:686f:6f21 68.142.255.16
ns3.yahoo.com27.123.42.42 2406:8600:f03f:1f8::1003AS23879 YAHOO-INY - INY Edge site, US AS23879 YAHOO-INY - INY Edge site, US2406:8600:f03f:1f8::1003 27.123.42.42
ns4.yahoo.com98.138.11.157AS36646 YAHOO-NE1 - Yahoo Holdings Inc., US98.138.11.157
ns5.yahoo.com202.165.97.53 2406:2000:1d0::7961:686f:6f21AS10880 YAHOO-AN2 - Yahoo Holdings Inc., US AS10880 YAHOO-AN2 - Yahoo Holdings Inc., US202.165.97.53 2406:2000:1d0::7961:686f:6f21

Checks

  • ✓ 5 nameservers #6
    Delegated to ns1.yahoo.com, ns2.yahoo.com, ns3.yahoo.com, ns4.yahoo.com, ns5.yahoo.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 5 IPv4 /24s and 4 IPv6 /48s.
  • ✓ 4 autonomous systems #11
    The nameservers are spread over: AS10880 (YAHOO-AN2 - Yahoo Holdings Inc., US): 4 addresses; AS23879 (YAHOO-INY - INY Edge site, US): 2 addresses; AS36646 (YAHOO-NE1 - Yahoo Holdings Inc., US): 1 address; AS7280 (YAHOO-FC - Yahoo Holdings Inc., US): 2 addresses.
  • 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
  • i
    Partly IPv6
    These nameservers have no IPv6 address: ns4.yahoo.com.
    #13

Nameservers

info

9 of 9 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.yahoo.com 68.180.131.16NOERROR, 10 ms, authoritativenoyes / yesrefusedYahoo
ns1.yahoo.com 2001:4998:1b0::7961:686f:6f21NOERROR, 19 ms, authoritativenoyes / yesrefusedYahoo
ns2.yahoo.com 68.142.255.16NOERROR, 4 ms, authoritativenoyes / yesrefusedYahoo
ns2.yahoo.com 2001:4998:1c0::7961:686f:6f21NOERROR, 4 ms, authoritativenoyes / yesrefusedYahoo
ns3.yahoo.com 27.123.42.42NOERROR, 200 ms, authoritativenoyes / yesrefusedYahoo
ns3.yahoo.com 2406:8600:f03f:1f8::1003NOERROR, 137 ms, authoritativenoyes / yesrefusedYahoo
ns4.yahoo.com 98.138.11.157NOERROR, 136 ms, authoritativenoyes / yesrefusedYahoo
ns5.yahoo.com 202.165.97.53NOERROR, 187 ms, authoritativenoyes / yesrefusedYahoo
ns5.yahoo.com 2406:2000:1d0::7961:686f:6f21NOERROR, 243 ms, authoritativenoyes / yesrefusedYahoo

Checks

  • ✓ All respond #14
    All 9 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: ns1.yahoo.com: "Yahoo"; ns2.yahoo.com: "Yahoo"; ns3.yahoo.com: "Yahoo"; ns4.yahoo.com: "Yahoo"; ns5.yahoo.com: "Yahoo".
    #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 2026090401 · primary hidden-master.yahoo.com

Found

Primary (MNAME)
hidden-master.yahoo.com
Contact (RNAME)
hostmaster.yahoo-inc.com
Serial
2026090401
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
ns1.yahoo.com (68.180.131.16)2026090401
ns1.yahoo.com (2001:4998:1b0::7961:686f:6f21)2026090401
ns2.yahoo.com (68.142.255.16)2026090401
ns2.yahoo.com (2001:4998:1c0::7961:686f:6f21)2026090401
ns3.yahoo.com (27.123.42.42)2026090401
ns3.yahoo.com (2406:8600:f03f:1f8::1003)2026090401
ns4.yahoo.com (98.138.11.157)2026090401
ns5.yahoo.com (202.165.97.53)2026090401
ns5.yahoo.com (2406:2000:1d0::7961:686f:6f21)2026090401

Checks

  • ✓ Serial 2026090401 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 10m.
  • i
    Hidden master
    The primary nameserver hidden-master.yahoo.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 hostmaster@yahoo-inc.com #25
    The SOA RNAME hostmaster.yahoo-inc.com means hostmaster@yahoo-inc.com.
  • ✓ Date-based serial #26
    The serial 2026090401 follows the YYYYMMDDnn convention (2026-09-04).

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

46 records at the apex

Found

Read from
68.180.131.16:53
TypeValueTTL
SOAhidden-master.yahoo.com. hostmaster.yahoo-inc.com. 2026090401 28800 7200 604800 6001800
NSns2.yahoo.com.172800
NSns5.yahoo.com.172800
NSns3.yahoo.com.172800
NSns1.yahoo.com.172800
NSns4.yahoo.com.172800
A76.223.84.1921800
A13.248.158.71800
MX10 mxb-00505701.gslb.pphosted.com.300
MX10 mxa-00505701.gslb.pphosted.com.300
TXT"nintex.600728d6c8fd0f006bec5486"1800
TXT"amazonses:yCH8+ORAi1mzJOL6m4pAvDV5xyW8EhEPfwds/F66Rx8="1800
TXT"google-site-verification=NQQKT1GTeFexePHElGqA9cLyy-R1T1GiXjrQ_DlLeXI"1800
TXT"amazonses:nRbXznAkfStqDtSZixKtoPInZowE4wREUIez22fB3cs="1800
TXT"dropbox-domain-verification=r6v03wv8ilq6"1800
TXT"1f3e1f70-a66d-4d09-a251-476e614234ca"1800
TXT"google-site-verification=Eq-H24AEMY7sT1V3Y6bLX9Kw3BHcvsaDcPsZaiRGERo"1800
TXT"docusign=0f38b620-5b8d-44d5-b989-0645c3330078"1800
TXT"adobe-idp-site-verification=7140bbc4fc1a28931660abd91f384fc50524772b4c50132aef94a6eec0ffdfaf"1800
TXT"amazonses:72TuvhFpBxgenIPhaeQvPF2uOH9K5aHW4bdEOBewocw="1800
TXT"v=spf1 include:_spf.google.com include:_spf.salesforce.com include:mktomail.com include:spf.dynect.net ip4:107.20.210.250 ip4:107.23.16.222 ip4:13.57.109.194 ip4:137.188.0.0/16 ip4:140.108.0.0/15 ip4:162.115.0.0/16 ip4:192.76.84.0/24 ip4:52.1.14.157 ip4:1" "99.249.25.0/24 ip4:52.38.129.250 ip4:54.173.83.138 ip4:63.27.6.0/24 ip4:216.145.54.170/30 ip4:216.145.54.154/31 ip4:98.139.253.104/31 ip4:162.13.248.246 ip4:162.13.248.247 ip4:5.148.32.142 ptr:yahoo.com ip4:148.163.135.35/32 ip4:148.163.139.55/32 -all"1800
TXT"amazonses:ZzdsXuV63waaX0zyqQlMaIVKsMkBRc7C27/twVhbdV8="1800
TXT"MS=AB9190434664E9360EC843F7D54795EDFB77BAC4"1800
TXT"amazonses:bfheXwcvOFdiXMoGAj9uzuF049B6IqIe1xMwkjdhamg="1800
TXT"knowbe4-site-verification=bc3830115833f4f956e30f506f1da8c8"1800
TXT"amazonses:Hfbpal+G2JHrr+jy1gxCsPPV0lv5VsQyApBwh8iUFds="1800
TXT"amazonses:B6Zowg3IyLQxMj6m94QmQm0CqhG+R3t/f6jCidxhERA="1800
TXT"566b4982698b43bd8d7cf9ad8b545ab2"1800
TXT"amazonses:oscxlxMWQfEbLo2XIlSp0bwdfpox7zI5SRJNNX1DadQ="1800
TXT"8455bdf9306c466f93d7e021505adea4"1800
TXT"amazonses:eOAQw6VbBT4RatnrU0Rmd3VAvRXnpoDBhnMFAKSTKhI="1800
TXT"bugcrowd-verification=cbbe7336f2982d2583456e397e980e0a"1800
TXT"amazonses:g2r7H8fd6Lh/Q7g+zyFchXGKZ/gQVOTpKOaBBKo0WFw="1800
TXT"slido-domain-verification=87b6e1fe-2406-444f-90df-2cd87a594a34"1800
TXT"fastly-domain-delegation-G9QM2l3GT2AGZl0syXAg-20210104"1800
TXT"teamviewer-sso-verification=3b9d7c9225794013b61ce60bbf6580e7"1800
TXT"amazonses:rF5q8pQ308QIRdvSH0y59iHVbJCc5CFDRXQL8HDYHGk="1800
TXT"teamviewer-sso-verification=1c92e89f0be34cc38332f60f683c7e31"1800
TXT"amazonses:uzeSCqHWNsURS588gv43U1o2LikYAAGGH71IAclOI9o="1800
TXT"atlassian-domain-verification=SUUFAoCUU/UDR2ppdBHyjG4gGv6Zd88VWKUiXBOUe9iTG0JZ23q92brRWZQS/ari"1800
TXT"google-site-verification=KbiiCQJxuUjqxFLHwKUuA-oewTIoK-0cTZtkMOVmLKc"1800
TXT"google-site-verification=7_EJxlz9dtqcR6Mun6WcxJfbi7xeqC7ip2lDwCnY9pI"1800
TXT"amazonses:UpW/np6ri6wi1puCPkobsK5AjpibRLEQcAaOGtw8yTs="1800
CAA0 issue "globalsign.com"1800
CAA0 iodef "mailto:security@yahooinc.com"1800
CAA0 issue "digicert.com"1800

Checks

  • ✓ TTLs within range #32
    TTLs: A 30m, MX 5m, NS 2d.
  • ✓ 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: globalsign.com, digicert.com.