zgyxlc.com

Checked 22 October 2026, 11:42 UTC · via 8.8.8.8
✗Problems found
18 passed 3 warnings 2 failed 8 info

Registration

info

.com generic · Alibaba Cloud Computing (Beijing) Co., Ltd. · expires 2031-05-19

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Alibaba Cloud Computing (Beijing) Co., Ltd.
Registered
19 May 2017
Last changed
11 May 2026
Expires
19 May 2031
Status
active
Registry nameservers
dns10.hichina.com, dns9.hichina.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 2031-05-19 #3
    The registration is valid until 2031-05-19 (1670 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

dns10.hichina.com, dns9.hichina.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
dns10.hichina.com, dns9.hichina.com
NS in the zone
dns10.hichina.com, dns9.hichina.com
NameserverAddressesNetwork (AS)Glue
dns10.hichina.com47.118.199.201 120.76.107.51 139.224.142.111 139.224.142.121 47.118.199.211 120.76.107.41 39.96.153.41 39.96.153.51 2408:4009:501::18AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN120.76.107.41 120.76.107.51 139.224.142.111 139.224.142.121 2408:4009:501::18 39.96.153.41 39.96.153.51 47.118.199.201 47.118.199.211
dns9.hichina.com47.118.199.212 120.76.107.42 39.96.153.42 120.76.107.52 47.118.199.202 39.96.153.52 139.224.142.112 139.224.142.122 2408:4009:501::17AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN120.76.107.42 120.76.107.52 139.224.142.112 139.224.142.122 2408:4009:501::17 39.96.153.42 39.96.153.52 47.118.199.202 47.118.199.212

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns10.hichina.com, dns9.hichina.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.
  • i
    One address family in one network
    all IPv6 addresses are in 2408:4009:501::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS37963 (ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN): 18 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
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

fail

17 of 18 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns10.hichina.com 47.118.199.201NOERROR, 207 ms, authoritativenoyes / yesrefused-
dns10.hichina.com 120.76.107.51NOERROR, 210 ms, authoritativenoyes / yesrefused-
dns10.hichina.com 139.224.142.111NOERROR, 207 ms, authoritativenoyes / yesrefused-
dns10.hichina.com 139.224.142.121NOERROR, 179 ms, authoritativenoyes / yesrefused-
dns10.hichina.com 47.118.199.211NOERROR, 234 ms, authoritativenoyes / yesrefused-
dns10.hichina.com 120.76.107.41NOERROR, 217 ms, authoritativenoyes / yesrefused-
dns10.hichina.com 39.96.153.41NOERROR, 152 ms, authoritativenono / yesrefused-
dns10.hichina.com 39.96.153.51NOERROR, 161 ms, authoritativenoyes / yesrefused-
dns10.hichina.com 2408:4009:501::18NOERROR, 208 ms, authoritativenoyes / yesrefused-
dns9.hichina.com 47.118.199.212NOERROR, 233 ms, authoritativenoyes / yesrefused-
dns9.hichina.com 120.76.107.42NOERROR, 205 ms, authoritativenoyes / yesrefused-
dns9.hichina.com 39.96.153.42no responsenono / no--
dns9.hichina.com 120.76.107.52NOERROR, 218 ms, authoritativenoyes / yesrefused-
dns9.hichina.com 47.118.199.202NOERROR, 206 ms, authoritativenoyes / yesrefused-
dns9.hichina.com 39.96.153.52NOERROR, 184 ms, authoritativenoyes / yesrefused-
dns9.hichina.com 139.224.142.112NOERROR, 165 ms, authoritativenoyes / yesrefused-
dns9.hichina.com 139.224.142.122NOERROR, 208 ms, authoritativenoyes / yesrefused-
dns9.hichina.com 2408:4009:501::17NOERROR, 194 ms, authoritativenoyes / yesrefused-

Checks

  • ✗
    Nameservers not responding
    These addresses did not answer, so resolvers waste time on timeouts: dns9.hichina.com (39.96.153.42): read udp 46.225.38.91:50606->39.96.153.42:53: 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.
  • ✗
    No DNS over TCP
    DNS over TCP is required (RFC 7766); without it, large answers such as DNSSEC responses fail. Not answering over TCP: dns10.hichina.com (39.96.153.41): read tcp 46.225.38.91:35386->39.96.153.41:53: i/o timeout.
    #19
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

warn

serial 2026082616 · primary dns9.hichina.com

Found

Primary (MNAME)
dns9.hichina.com
Contact (RNAME)
hostmaster.hichina.com
Serial
2026082616
Refresh / retry
3600 s / 1200 s
Expire
86400 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
dns10.hichina.com (47.118.199.201)2026082616
dns10.hichina.com (120.76.107.51)2026082509
dns10.hichina.com (139.224.142.111)2026082509
dns10.hichina.com (139.224.142.121)2026082709
dns10.hichina.com (47.118.199.211)2026082616
dns10.hichina.com (120.76.107.41)2026081813
dns10.hichina.com (39.96.153.41)2026082617
dns10.hichina.com (39.96.153.51)2026082617
dns10.hichina.com (2408:4009:501::18)2026082616
dns9.hichina.com (47.118.199.212)2026082815
dns9.hichina.com (120.76.107.42)2026082616
dns9.hichina.com (120.76.107.52)2026082616
dns9.hichina.com (47.118.199.202)2026082616
dns9.hichina.com (39.96.153.52)2026082616
dns9.hichina.com (139.224.142.112)2026082616
dns9.hichina.com (139.224.142.122)2026082616
dns9.hichina.com (2408:4009:501::17)2026082509

Checks

  • !
    Serials differ
    The nameservers serve different versions of the zone: 2026081813 on dns10.hichina.com (120.76.107.41); 2026082509 on dns10.hichina.com (120.76.107.51), dns10.hichina.com (139.224.142.111), dns9.hichina.com (2408:4009:501::17); 2026082616 on dns10.hichina.com (47.118.199.201), dns10.hichina.com (47.118.199.211), dns10.hichina.com (2408:4009:501::18), dns9.hichina.com (120.76.107.42), dns9.hichina.com (120.76.107.52), dns9.hichina.com (47.118.199.202), dns9.hichina.com (39.96.153.52), dns9.hichina.com (139.224.142.112), dns9.hichina.com (139.224.142.122); 2026082617 on dns10.hichina.com (39.96.153.41), dns10.hichina.com (39.96.153.51); 2026082709 on dns10.hichina.com (139.224.142.121); 2026082815 on dns9.hichina.com (47.118.199.212). This is normal for a few minutes after a change; if it lasts, zone transfers to the secondaries are failing.
    #22
  • !
    Unusual SOA timers
    expire 1d is shorter than 7d; secondaries stop answering too soon when the primary is down. Current values: refresh 1h, retry 20m, expire 1d, negative TTL 10m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns9.hichina.com is one of the listed nameservers.
  • ✓ Contact hostmaster@hichina.com #25
    The SOA RNAME hostmaster.hichina.com means hostmaster@hichina.com.
  • ✓ Date-based serial #26
    The serial 2026082616 follows the YYYYMMDDnn convention (2026-08-26).

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

5 records at the apex

Found

Read from
47.118.199.201:53
TypeValueTTL
SOAdns9.hichina.com. hostmaster.hichina.com. 2026082815 3600 1200 86400 600600
A8.130.177.12600
MX10 mxw.mxhichina.com.600
MX5 mxn.mxhichina.com.600
TXT"v=spf1 include:spf.mxhichina.com -all"600

Checks

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