ohio.com

Checked 22 October 2026, 10:05 UTC · via 8.8.8.8
!Passed with warnings
24 passed 3 warnings 0 failed 4 info

Registration

info

.com generic · GoDaddy Corporate Domains, LLC · expires 2027-05-03

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy Corporate Domains, LLC
Registered
2 May 1996
Last changed
2 April 2026
Expires
3 May 2027
Status
client transfer prohibited
Registry nameservers
ns1.ghmdns.com, ns2.ghmdns.com, ns3.ghmdns.com, ns4.ghmdns.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 2027-05-03 #3
    The registration is valid until 2027-05-03 (192 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

ns1.ghmdns.com, ns2.ghmdns.com, ns3.ghmdns.com, ns4.ghmdns.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.ghmdns.com, ns2.ghmdns.com, ns3.ghmdns.com, ns4.ghmdns.com
NS in the zone
ns1.ghmdns.com, ns2.ghmdns.com, ns3.ghmdns.com, ns4.ghmdns.com
NameserverAddressesNetwork (AS)Glue
ns1.ghmdns.com205.251.195.172AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.195.172
ns2.ghmdns.com205.251.197.70AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.197.70
ns3.ghmdns.com205.251.199.222AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.199.222
ns4.ghmdns.com205.251.193.21AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.21

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1.ghmdns.com, ns2.ghmdns.com, ns3.ghmdns.com, ns4.ghmdns.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 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.ghmdns.com 205.251.195.172NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns2.ghmdns.com 205.251.197.70NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns3.ghmdns.com 205.251.199.222NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns4.ghmdns.com 205.251.193.21NOERROR, 16 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

pass

serial 1 · primary ns1.ghmdns.com

Found

Primary (MNAME)
ns1.ghmdns.com
Contact (RNAME)
awsdns-hostmaster.amazon.com
Serial
1
Refresh / retry
7200 s / 900 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.ghmdns.com (205.251.195.172)1
ns2.ghmdns.com (205.251.197.70)1
ns3.ghmdns.com (205.251.199.222)1
ns4.ghmdns.com (205.251.193.21)1

Checks

  • ✓ Serial 1 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 15m, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.ghmdns.com is one of the listed nameservers.
  • ✓ Contact awsdns-hostmaster@amazon.com #25
    The SOA RNAME awsdns-hostmaster.amazon.com means awsdns-hostmaster@amazon.com.
  • ✓ Counter serial #26
    The serial 1 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

warn

16 records at the apex

Found

Read from
205.251.195.172:53
TypeValueTTL
SOAns1.ghmdns.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 864003600
NSns1.ghmdns.com.3600
NSns2.ghmdns.com.3600
NSns3.ghmdns.com.3600
NSns4.ghmdns.com.3600
A35.202.203.21760
MX10 mx1.mailhop.org.300
MX20 mx2.mailhop.org.300
MX50 abjodcmail.ohio.com.300
TXT"_globalsign-domain-verification=xR7JJmB9DI1wp7BfzS1Hf7T9u0OoVpPdeokQ1GB5GV"60
TXT"facebook-domain-verification=ra3j0ntowqym9dt63ddunqvzdzdon6"60
TXT"google-site-verification=Kf_C7uvaI6wmxqCU4FMOH9Io3AlKVvpkXyFXtsvWVeQ"60
TXT"google-site-verification=LnD3DwwT0wzVY8yOnQII5MxZIXbKL95bPftdyPBOCqM"60
TXT"google-site-verification=rqpQ31ymIbulFdGRnQpey91LQw-laQKpQonUUD9hpHo"60
TXT"loaderio=92bd2028c6bfb40eb63ff27b669f809e"60
TXT"v=spf1 mx include:_spf.google.com include:mktomail.com ~all"60

Checks

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