yangguangdd.com

Checked 22 October 2026, 11:36 UTC · via 8.8.8.8
✗Problems found
23 passed 1 warning 1 failed 6 info

Registration

info

.com generic · Xin Net Technology Corporation · expires 2027-07-01

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Xin Net Technology Corporation
Registered
1 July 2019
Last changed
25 June 2026
Expires
1 July 2027
Status
active
Registry nameservers
ns1.hwclouds-dns.com, ns1.hwclouds-dns.net
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 2027-07-01 #3
    The registration is valid until 2027-07-01 (251 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.hwclouds-dns.com, ns1.hwclouds-dns.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.hwclouds-dns.com, ns1.hwclouds-dns.net
NS in the zone
ns1.hwclouds-dns.com, ns1.hwclouds-dns.net
NameserverAddressesNetwork (AS)Glue
ns1.hwclouds-dns.com122.112.208.253 139.9.224.17 116.205.5.33 116.205.223.130 2407:c080:20:ffff:ffff:fffe:0:1AS55990 HWCSNET - Huawei Cloud Service data center, CN AS58519 CHINATELECOM-Ctcloud - Cloud Computing Corporation, CN AS55990 HWCSNET - Huawei Cloud Service data center, CN AS55990 HWCSNET - Huawei Cloud Service data center, CN AS55990 HWCSNET - Huawei Cloud Service data center, CN116.205.223.130 116.205.5.33 122.112.208.253 139.9.224.17 2407:c080:20:ffff:ffff:fffe:0:1
ns1.hwclouds-dns.net190.92.196.2 159.138.17.187 159.138.160.107 2407:c080:20:ffff:ffff:fffe:0:1AS136907 HWCLOUDS-AS-AP - HUAWEI CLOUDS, HK AS136907 HWCLOUDS-AS-AP - HUAWEI CLOUDS, HK AS136907 HWCLOUDS-AS-AP - HUAWEI CLOUDS, HK AS55990 HWCSNET - Huawei Cloud Service data center, CN-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.hwclouds-dns.com, ns1.hwclouds-dns.net.
    #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.
  • i
    One address family in one network
    all IPv6 addresses are in 2407:c080:20::/48, while the other address family is spread over several networks.
    #10
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS136907 (HWCLOUDS-AS-AP - HUAWEI CLOUDS, HK): 3 addresses; AS55990 (HWCSNET - Huawei Cloud Service data center, CN): 5 addresses; AS58519 (CHINATELECOM-Ctcloud - Cloud Computing Corporation, CN): 1 address.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .com, .net.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

fail

8 of 9 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.hwclouds-dns.com 122.112.208.253NOERROR, 228 ms, authoritativenoyes / yesrefused-
ns1.hwclouds-dns.com 139.9.224.17NOERROR, 212 ms, authoritativenoyes / yesrefused-
ns1.hwclouds-dns.com 116.205.5.33NOERROR, 181 ms, authoritativenoyes / yesrefused-
ns1.hwclouds-dns.com 116.205.223.130NOERROR, 226 ms, authoritativenoyes / yesrefused-
ns1.hwclouds-dns.com 2407:c080:20:ffff:ffff:fffe:0:1no responsenono / no--
ns1.hwclouds-dns.net 190.92.196.2NOERROR, 169 ms, authoritativenoyes / yesrefused-
ns1.hwclouds-dns.net 159.138.17.187NOERROR, 265 ms, authoritativenoyes / yesrefused-
ns1.hwclouds-dns.net 159.138.160.107NOERROR, 184 ms, authoritativenoyes / yesrefused-
ns1.hwclouds-dns.net 2407:c080:20:ffff:ffff:fffe:0:1NOERROR, 205 ms, authoritativenoyes / yesrefused-

Checks

  • ✗
    Nameservers not responding
    These addresses did not answer, so resolvers waste time on timeouts: ns1.hwclouds-dns.com (2407:c080:20:ffff:ffff:fffe:0:1): read udp [2a01:4f8:1c1c:eebf::1]:57656->[2407:c080:20:ffff:ffff:fffe:0:1]:53: i/o timeout.
    #14
  • ✓ 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.hwclouds-dns.com

Found

Primary (MNAME)
ns1.hwclouds-dns.com
Contact (RNAME)
hwclouds\.cs.huawei.com
Serial
1
Refresh / retry
7200 s / 900 s
Expire
1209600 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1.hwclouds-dns.com (122.112.208.253)1
ns1.hwclouds-dns.com (139.9.224.17)1
ns1.hwclouds-dns.com (116.205.5.33)1
ns1.hwclouds-dns.com (116.205.223.130)1
ns1.hwclouds-dns.net (190.92.196.2)1
ns1.hwclouds-dns.net (159.138.17.187)1
ns1.hwclouds-dns.net (159.138.160.107)1
ns1.hwclouds-dns.net (2407:c080:20:ffff:ffff:fffe:0:1)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 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.hwclouds-dns.com is one of the listed nameservers.
  • ✓ Contact hwclouds.cs@huawei.com #25
    The SOA RNAME hwclouds\.cs.huawei.com means hwclouds.cs@huawei.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

info

3 records at the apex

Found

Read from
122.112.208.253:53
TypeValueTTL
SOAns1.hwclouds-dns.com. hwclouds\.cs.huawei.com. 1 7200 900 1209600 300300
NSns1.hwclouds-dns.net.172800
NSns1.hwclouds-dns.com.172800

Checks

  • ✓ TTLs within range #32
    TTLs: NS 2d.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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