zooios.com

Checked 22 October 2026, 11:44 UTC · via 8.8.8.8
✗Problems found
19 passed 3 warnings 1 failed 8 info

Registration

info

.com generic · Alibaba Cloud Computing (Beijing) Co., Ltd. · expires 2027-04-16

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Alibaba Cloud Computing (Beijing) Co., Ltd.
Registered
16 April 2014
Last changed
28 March 2026
Expires
16 April 2027
Status
active
Registry nameservers
dns19.hichina.com, dns20.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 2027-04-16 #3
    The registration is valid until 2027-04-16 (175 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

dns19.hichina.com, dns20.hichina.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
dns19.hichina.com, dns20.hichina.com
NS in the zone
dns19.hichina.com, dns20.hichina.com
NameserverAddressesNetwork (AS)Glue
dns19.hichina.com139.224.142.100 120.76.107.40 39.96.153.60 47.118.199.200 120.76.107.60 39.96.153.40 139.224.142.110 47.118.199.220 2408:4009:501::27AS37963 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., CN120.76.107.40 120.76.107.60 139.224.142.100 139.224.142.110 2408:4009:501::27 39.96.153.40 39.96.153.60 47.118.199.200 47.118.199.220
dns20.hichina.com120.76.107.38 139.224.142.98 39.96.153.38 47.118.199.222 120.76.107.61 47.118.199.198 39.96.153.61 139.224.142.108 2408:4009:501::28AS37963 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., CN120.76.107.38 120.76.107.61 139.224.142.108 139.224.142.98 2408:4009:501::28 39.96.153.38 39.96.153.61 47.118.199.198 47.118.199.222

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns19.hichina.com, dns20.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
dns19.hichina.com 139.224.142.100NOERROR, 167 ms, authoritativenoyes / yesrefused-
dns19.hichina.com 120.76.107.40NOERROR, 209 ms, authoritativenoyes / yesrefused-
dns19.hichina.com 39.96.153.60NOERROR, 162 ms, authoritativenoyes / yesrefused-
dns19.hichina.com 47.118.199.200NOERROR, 199 ms, authoritativenoyes / yesrefused-
dns19.hichina.com 120.76.107.60NOERROR, 193 ms, authoritativenoyes / yesrefused-
dns19.hichina.com 39.96.153.40NOERROR, 163 ms, authoritativenoyes / yesrefused-
dns19.hichina.com 139.224.142.110NOERROR, 219 ms, authoritativenoyes / yesrefused-
dns19.hichina.com 47.118.199.220NOERROR, 204 ms, authoritativenoyes / yesrefused-
dns19.hichina.com 2408:4009:501::27no responsenono / no--
dns20.hichina.com 120.76.107.38NOERROR, 208 ms, authoritativenoyes / yesrefused-
dns20.hichina.com 139.224.142.98NOERROR, 172 ms, authoritativenoyes / yesrefused-
dns20.hichina.com 39.96.153.38NOERROR, 154 ms, authoritativenoyes / yesrefused-
dns20.hichina.com 47.118.199.222NOERROR, 203 ms, authoritativenoyes / yesrefused-
dns20.hichina.com 120.76.107.61NOERROR, 218 ms, authoritativenoyes / yesrefused-
dns20.hichina.com 47.118.199.198NOERROR, 228 ms, authoritativenoyes / yesrefused-
dns20.hichina.com 39.96.153.61NOERROR, 151 ms, authoritativenoyes / yesrefused-
dns20.hichina.com 139.224.142.108NOERROR, 200 ms, authoritativenoyes / yesrefused-
dns20.hichina.com 2408:4009:501::28NOERROR, 202 ms, authoritativenoyes / yesrefused-

Checks

  • ✗
    Nameservers not responding
    These addresses did not answer, so resolvers waste time on timeouts: dns19.hichina.com (2408:4009:501::27): read udp [2a01:4f8:1c1c:eebf::1]:47191->[2408:4009:501::27]: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 dns19.hichina.com

Found

Primary (MNAME)
dns19.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
dns19.hichina.com (139.224.142.100)2026082616
dns19.hichina.com (120.76.107.40)2026081813
dns19.hichina.com (39.96.153.60)2026082617
dns19.hichina.com (47.118.199.200)2026082815
dns19.hichina.com (120.76.107.60)2026082509
dns19.hichina.com (39.96.153.40)2026082616
dns19.hichina.com (139.224.142.110)2026082616
dns19.hichina.com (47.118.199.220)2026082616
dns20.hichina.com (120.76.107.38)2026081813
dns20.hichina.com (139.224.142.98)2026082616
dns20.hichina.com (39.96.153.38)2026082617
dns20.hichina.com (47.118.199.222)2026082617
dns20.hichina.com (120.76.107.61)2026081813
dns20.hichina.com (47.118.199.198)2026082616
dns20.hichina.com (39.96.153.61)2026082616
dns20.hichina.com (139.224.142.108)2026082709
dns20.hichina.com (2408:4009:501::28)2026082617

Checks

  • !
    Serials differ
    The nameservers serve different versions of the zone: 2026081813 on dns19.hichina.com (120.76.107.40), dns20.hichina.com (120.76.107.38), dns20.hichina.com (120.76.107.61); 2026082509 on dns19.hichina.com (120.76.107.60); 2026082616 on dns19.hichina.com (139.224.142.100), dns19.hichina.com (39.96.153.40), dns19.hichina.com (139.224.142.110), dns19.hichina.com (47.118.199.220), dns20.hichina.com (139.224.142.98), dns20.hichina.com (47.118.199.198), dns20.hichina.com (39.96.153.61); 2026082617 on dns19.hichina.com (39.96.153.60), dns20.hichina.com (39.96.153.38), dns20.hichina.com (47.118.199.222), dns20.hichina.com (2408:4009:501::28); 2026082709 on dns20.hichina.com (139.224.142.108); 2026082815 on dns19.hichina.com (47.118.199.200). 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 dns19.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
139.224.142.100:53
TypeValueTTL
SOAdns19.hichina.com. hostmaster.hichina.com. 2026082709 3600 1200 86400 600600
NSdns19.hichina.com.86400
NSdns20.hichina.com.86400

Checks

  • ✓ TTLs within range #32
    TTLs: 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.
  • 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