whdh.com

Checked 22 October 2026, 11:30 UTC · via 8.8.8.8
!Passed with warnings
23 passed 3 warnings 0 failed 5 info

Registration

info

.com generic · Network Solutions, LLC · expires 2031-11-03

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Network Solutions, LLC
Registered
4 November 1994
Last changed
3 November 2021
Expires
3 November 2031
Status
client transfer prohibited
Registry nameservers
ns49.worldnic.com, ns50.worldnic.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 2031-11-03 #3
    The registration is valid until 2031-11-03 (1837 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

ns49.worldnic.com, ns50.worldnic.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns49.worldnic.com, ns50.worldnic.com
NS in the zone
ns49.worldnic.com, ns50.worldnic.com
NameserverAddressesNetwork (AS)Glue
ns49.worldnic.com162.159.26.111AS13335 CLOUDFLARENET - Cloudflare, Inc., US162.159.26.111
ns50.worldnic.com162.159.27.50AS13335 CLOUDFLARENET - Cloudflare, Inc., US162.159.27.50

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns49.worldnic.com, ns50.worldnic.com.
    #6
  • ✓ 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 2 IPv4 /24s and 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 2 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

warn

2 of 2 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns49.worldnic.com 162.159.26.111NOERROR, 25 ms, authoritativenoyes / yesrefused2026.10.8
ns50.worldnic.com 162.159.27.50NOERROR, 29 ms, authoritativenoyes / yesrefused2026.10.8

Checks

  • ✓ All respond #14
    All 2 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: ns49.worldnic.com: "2026.10.8"; ns50.worldnic.com: "2026.10.8". 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

pass

serial 126102015 · primary ns49.worldnic.com

Found

Primary (MNAME)
ns49.worldnic.com
Contact (RNAME)
namehost.worldnic.com
Serial
126102015
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
ns49.worldnic.com (162.159.26.111)126102015
ns50.worldnic.com (162.159.27.50)126102015

Checks

  • ✓ Serial 126102015 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns49.worldnic.com is one of the listed nameservers.
  • ✓ Contact namehost@worldnic.com #25
    The SOA RNAME namehost.worldnic.com means namehost@worldnic.com.
  • ✓ Counter serial #26
    The serial 126102015 is a plain counter.

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

info

21 records at the apex

Found

Read from
162.159.26.111:53
TypeValueTTL
SOANS49.WORLDNIC.com. namehost.WORLDNIC.com. 126102015 10800 3600 604800 36007200
NSns49.worldnic.com.7200
NSns50.worldnic.com.7200
A192.0.66.967200
MX30 alt2.us.email.fireeyecloud.com.3600
MX40 alt3.us.email.fireeyecloud.com.3600
MX10 primary.us.email.fireeyecloud.com.3600
MX20 alt1.us.email.fireeyecloud.com.3600
TXT"cisco-ci-domain-verification=5f17ac775623436659ad22d93b18b31840a188e104ebd0393eef942367b7b04a"7200
TXT"dsbrf2mtsgj978ua1v1h7jq1pn"3600
TXT"v=spf1 mx ip4:192.55.82.60 include:servers.mcsv.net include:spf.protection.outlook.com include:whdh-com.spf.smtp25.com -all"7200
TXT"2FVC4jgBiL5w/bxq3AJPmwy5gUpuwJQ2EkIitdIrjOaU8UL/SdM+S3UVVy+MG/u0CjpwJPZJT1kqoBc7vDT4vA=="7200
TXT"_dv9jpfx7qpr5ub9plv44h8oio76542w"7200
TXT"duo_sso_verification=114V895QItbWI3fX9rDTx54oBkrnCi1KCGwdm8tpZTFp2uqzOJm9Vm1VkAJkfEzY"3600
TXT"fstMPS0q1lIXVGgnfVwwQA=="3600
TXT"9S4euM49KUocnvneQ9KaJtxqLoK5h9HVrbTu2eXddAOOAbZlbRHg53w2AxS3H0A8f0yYOLMMlIVq+LrjfwGgQA=="7200
TXT"facebook-domain-verification=nz8jj8zq8dqvoag3r4pt9rrgmd05p1"7200
TXT"MS=ms46767509"7200
TXT"spf2.0/pra mx ip4:192.55.82.60 include:servers.mcsv.net ?all include:spf.protection.outlook.com -all"7200
TXT"google-site-verification=BA-aNjci5LZY5y8NqNoBpc5H9cBNrsswdXavlC6V1rE"7200
TXT"google-site-verification=cYzuV2NnAtAbOcp8D_3CuaCZuPyx619Mq_-4Jfpyw6o"7200

Checks

  • ✓ TTLs within range #32
    TTLs: A 2h, MX 1h, NS 2h. The NS TTL at the parent is 2d and in the zone 2h; 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.
  • 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