zanbox.com

Checked 22 October 2026, 11:42 UTC · via 8.8.8.8
✗Problems found
20 passed 3 warnings 2 failed 6 info

Registration

fail

.com generic · Alibaba Cloud Computing (Beijing) Co., Ltd. · expires 2026-10-30

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Alibaba Cloud Computing (Beijing) Co., Ltd.
Registered
30 October 2014
Last changed
29 October 2025
Expires
30 October 2026
Status
client transfer prohibited, client update prohibited
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 in 7 days
    The registration expires on 2026-10-30. Renew it now or enable auto-renewal.
    #3
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited, client update prohibited.
  • ✓ 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 47.118.199.211 120.76.107.51 139.224.142.121 39.96.153.51 120.76.107.41 39.96.153.41 139.224.142.111 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.com120.76.107.42 139.224.142.112 39.96.153.52 39.96.153.42 139.224.142.122 47.118.199.202 47.118.199.212 120.76.107.52 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, 235 ms, authoritativenoyes / yesrefused-
dns10.hichina.com 47.118.199.211NOERROR, 230 ms, authoritativenoyes / yesrefused-
dns10.hichina.com 120.76.107.51NOERROR, 202 ms, authoritativenoyes / yesrefused-
dns10.hichina.com 139.224.142.121NOERROR, 178 ms, authoritativenoyes / yesrefused-
dns10.hichina.com 39.96.153.51NOERROR, 146 ms, authoritativenoyes / yesrefused-
dns10.hichina.com 120.76.107.41NOERROR, 206 ms, authoritativenoyes / yesrefused-
dns10.hichina.com 39.96.153.41NOERROR, 140 ms, authoritativenoyes / yesrefused-
dns10.hichina.com 139.224.142.111NOERROR, 208 ms, authoritativenoyes / yesrefused-
dns10.hichina.com 2408:4009:501::18NOERROR, 215 ms, authoritativenoyes / yesrefused-
dns9.hichina.com 120.76.107.42NOERROR, 209 ms, authoritativenoyes / yesrefused-
dns9.hichina.com 139.224.142.112NOERROR, 192 ms, authoritativenoyes / yesrefused-
dns9.hichina.com 39.96.153.52NOERROR, 174 ms, authoritativenoyes / yesrefused-
dns9.hichina.com 39.96.153.42NOERROR, 150 ms, authoritativenoyes / yesrefused-
dns9.hichina.com 139.224.142.122NOERROR, 182 ms, authoritativenoyes / yesrefused-
dns9.hichina.com 47.118.199.202NOERROR, 211 ms, authoritativenoyes / yesrefused-
dns9.hichina.com 47.118.199.212NOERROR, 207 ms, authoritativenoyes / yesrefused-
dns9.hichina.com 120.76.107.52no responsenono / no--
dns9.hichina.com 2408:4009:501::17NOERROR, 203 ms, authoritativenoyes / yesrefused-

Checks

  • ✗
    Nameservers not responding
    These addresses did not answer, so resolvers waste time on timeouts: dns9.hichina.com (120.76.107.52): read udp 46.225.38.91:34878->120.76.107.52:53: 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

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 (47.118.199.211)2026082815
dns10.hichina.com (120.76.107.51)2026082509
dns10.hichina.com (139.224.142.121)2026082709
dns10.hichina.com (39.96.153.51)2026082616
dns10.hichina.com (120.76.107.41)2026081813
dns10.hichina.com (39.96.153.41)2026082617
dns10.hichina.com (139.224.142.111)2026082616
dns10.hichina.com (2408:4009:501::18)2026082616
dns9.hichina.com (120.76.107.42)2026082617
dns9.hichina.com (139.224.142.112)2026082709
dns9.hichina.com (39.96.153.52)2026082617
dns9.hichina.com (39.96.153.42)2026082617
dns9.hichina.com (139.224.142.122)2014103008
dns9.hichina.com (47.118.199.202)2026082616
dns9.hichina.com (47.118.199.212)2026082616
dns9.hichina.com (2408:4009:501::17)2026082509

Checks

  • !
    Serials differ
    The nameservers serve different versions of the zone: 2014103008 on dns9.hichina.com (139.224.142.122); 2026081813 on dns10.hichina.com (120.76.107.41); 2026082509 on dns10.hichina.com (120.76.107.51), dns9.hichina.com (2408:4009:501::17); 2026082616 on dns10.hichina.com (47.118.199.201), dns10.hichina.com (39.96.153.51), dns10.hichina.com (139.224.142.111), dns10.hichina.com (2408:4009:501::18), dns9.hichina.com (47.118.199.202), dns9.hichina.com (47.118.199.212); 2026082617 on dns10.hichina.com (39.96.153.41), dns9.hichina.com (120.76.107.42), dns9.hichina.com (39.96.153.52), dns9.hichina.com (39.96.153.42); 2026082709 on dns10.hichina.com (139.224.142.121), dns9.hichina.com (139.224.142.112); 2026082815 on dns10.hichina.com (47.118.199.211). 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

3 records at the apex

Found

Read from
47.118.199.201:53
TypeValueTTL
NSdns10.hichina.com.86400
NSdns9.hichina.com.86400
A112.124.187.148600

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