ntghkt.com

Checked 22 October 2026, 10:04 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 4 info

Registration

info

.com generic · Shanghai Meicheng Technology Information Development Co., Ltd. · expires 2030-05-09

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Shanghai Meicheng Technology Information Development Co., Ltd.
Registered
9 May 2018
Last changed
28 February 2026
Expires
9 May 2030
Status
client transfer prohibited
Registry nameservers
a.ezdnscenter.com, b.ezdnscenter.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 2030-05-09 #3
    The registration is valid until 2030-05-09 (1294 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

a.ezdnscenter.com, b.ezdnscenter.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
a.ezdnscenter.com, b.ezdnscenter.com
NS in the zone
a.ezdnscenter.com, b.ezdnscenter.com
NameserverAddressesNetwork (AS)Glue
a.ezdnscenter.com218.98.111.140AS133775 CHINATELECOM-Fujian-Xiamen-IDC1 - Xiamen, CN218.98.111.140
b.ezdnscenter.com211.99.99.58 183.253.57.210AS134763 CT-DongGuan-IDC - CHINANET Guangdong province network, CN AS9808 CHINAMOBILE-CN - China Mobile Communications Group Co., Ltd., CN183.253.57.210 211.99.99.58

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: a.ezdnscenter.com, b.ezdnscenter.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 3 IPv4 /24s and 0 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS133775 (CHINATELECOM-Fujian-Xiamen-IDC1 - Xiamen, CN): 1 address; AS134763 (CT-DongGuan-IDC - CHINANET Guangdong province network, CN): 1 address; AS9808 (CHINAMOBILE-CN - China Mobile Communications Group Co., Ltd., CN): 1 address.
  • 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

3 of 3 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
a.ezdnscenter.com 218.98.111.140NOERROR, 200 ms, authoritativenoyes / yesrefused-
b.ezdnscenter.com 211.99.99.58NOERROR, 194 ms, authoritativenoyes / yesrefused-
b.ezdnscenter.com 183.253.57.210NOERROR, 190 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 3 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 1751342684 · primary a.ezdnscenter.com

Found

Primary (MNAME)
a.ezdnscenter.com
Contact (RNAME)
dnsadmin.ezdnscenter.com
Serial
1751342684
Refresh / retry
3600 s / 300 s
Expire
1209600 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
a.ezdnscenter.com (218.98.111.140)1751342684
b.ezdnscenter.com (211.99.99.58)1751342684
b.ezdnscenter.com (183.253.57.210)1751342684

Checks

  • ✓ Serial 1751342684 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 5m, expire 14d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver a.ezdnscenter.com is one of the listed nameservers.
  • ✓ Contact dnsadmin@ezdnscenter.com #25
    The SOA RNAME dnsadmin.ezdnscenter.com means dnsadmin@ezdnscenter.com.
  • ✓ Timestamp serial #26
    The serial 1751342684 is a Unix timestamp (2025-07-01 04:04 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

info

4 records at the apex

Found

Read from
218.98.111.140:53
TypeValueTTL
SOAa.ezdnscenter.com. dnsadmin.ezdnscenter.com. 1751342684 3600 300 1209600 1800600
NSa.ezdnscenter.com.86400
NSb.ezdnscenter.com.86400
A49.79.241.40600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, 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.
  • 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