zdyyxnk.com

Checked 22 October 2026, 11:42 UTC · via 8.8.8.8
!Passed with warnings
25 passed 1 warning 0 failed 5 info

Registration

info

.com generic · 22net, Inc. · expires 2027-05-20

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
22net, Inc.
Registered
20 May 2016
Last changed
15 May 2026
Expires
20 May 2027
Status
active
Registry nameservers
ns1.22.cn, ns2.22.cn
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 2027-05-20 #3
    The registration is valid until 2027-05-20 (209 days).
  • i
    No transfer lock
    The domain has no transfer lock (status: active). A registrar lock protects against unauthorized transfers.
    #4
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns1.22.cn, ns2.22.cn

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.22.cn, ns2.22.cn
NS in the zone
ns1.22.cn, ns2.22.cn
NameserverAddressesNetwork (AS)Glue
ns1.22.cn61.158.128.10 218.98.111.136 2001:df2:f080:1::5AS4837 CHINA169-Backbone - CHINA UNICOM China169 Backbone, CN AS133775 CHINATELECOM-Fujian-Xiamen-IDC1 - Xiamen, CN AS140227 HKCICL-AS-AP - Hong Kong Communications International Co., Limited, HK-
ns2.22.cn183.253.57.207 211.99.99.61 1.193.216.203 240e:97d:10:1402:0:1:0:1002AS9808 CHINAMOBILE-CN - China Mobile Communications Group Co., Ltd., CN AS134763 CT-DongGuan-IDC - CHINANET Guangdong province network, CN AS4134 CHINANET-BACKBONE - No.31,Jin-rong Street, CN AS134763 CT-DongGuan-IDC - CHINANET Guangdong province network, CN-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.22.cn, ns2.22.cn.
    #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 5 IPv4 /24s and 2 IPv6 /48s.
  • ✓ 6 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): 2 addresses; AS140227 (HKCICL-AS-AP - Hong Kong Communications International Co., Limited, HK): 1 address; AS4134 (CHINANET-BACKBONE - No.31,Jin-rong Street, CN): 1 address; AS4837 (CHINA169-Backbone - CHINA UNICOM China169 Backbone, CN): 1 address; AS9808 (CHINAMOBILE-CN - China Mobile Communications Group Co., Ltd., CN): 1 address.
  • i
    All nameserver names under .cn
    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
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

7 of 7 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.22.cn 61.158.128.10NOERROR, 141 ms, authoritativenoyes / yesrefused-
ns1.22.cn 218.98.111.136NOERROR, 207 ms, authoritativenoyes / yesrefused-
ns1.22.cn 2001:df2:f080:1::5NOERROR, 151 ms, authoritativenoyes / yesrefused-
ns2.22.cn 183.253.57.207NOERROR, 189 ms, authoritativenoyes / yesrefused-
ns2.22.cn 211.99.99.61NOERROR, 200 ms, authoritativenoyes / yesrefused-
ns2.22.cn 1.193.216.203NOERROR, 182 ms, authoritativenoyes / yesrefused-
ns2.22.cn 240e:97d:10:1402:0:1:0:1002NOERROR, 198 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 7 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 1789115799 · primary ns1.22.cn

Found

Primary (MNAME)
ns1.22.cn
Contact (RNAME)
dnsadmin.22.cn
Serial
1789115799
Refresh / retry
3600 s / 300 s
Expire
1209600 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
ns1.22.cn (61.158.128.10)1789115799
ns1.22.cn (218.98.111.136)1789115799
ns1.22.cn (2001:df2:f080:1::5)1789115799
ns2.22.cn (183.253.57.207)1789115799
ns2.22.cn (211.99.99.61)1789115799
ns2.22.cn (1.193.216.203)1789115799
ns2.22.cn (240e:97d:10:1402:0:1:0:1002)1789115799

Checks

  • ✓ Serial 1789115799 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 ns1.22.cn is one of the listed nameservers.
  • ✓ Contact dnsadmin@22.cn #25
    The SOA RNAME dnsadmin.22.cn means dnsadmin@22.cn.
  • ✓ Timestamp serial #26
    The serial 1789115799 is a Unix timestamp (2026-09-11 08:36 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
61.158.128.10:53
TypeValueTTL
SOAns1.22.cn. dnsadmin.22.cn. 1789115799 3600 300 1209600 1800600
NSns1.22.cn.86400
NSns2.22.cn.86400
A222.186.174.66600

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