shengyitang.com

Checked 22 October 2026, 10:41 UTC · via 8.8.8.8
✗Problems found
21 passed 3 warnings 1 failed 6 info

Registration

info

.com generic · Xin Net Technology Corporation · expires 2027-03-15

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Xin Net Technology Corporation
Registered
15 March 2002
Last changed
20 March 2024
Expires
15 March 2027
Status
client transfer prohibited
Registry nameservers
ns1.alidns.com, ns2.alidns.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 2027-03-15 #3
    The registration is valid until 2027-03-15 (143 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns1.alidns.com, ns2.alidns.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.alidns.com, ns2.alidns.com
NS in the zone
ns1.alidns.com, ns2.alidns.com
NameserverAddressesNetwork (AS)Glue
ns1.alidns.com39.96.153.45 120.76.107.45 139.224.142.115 47.118.199.205 139.224.142.125 47.118.199.215 120.76.107.55 39.96.153.55 2408:4009:501::1AS37963 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., CN120.76.107.45 120.76.107.55 139.224.142.115 139.224.142.125 2408:4009:501::1 39.96.153.45 39.96.153.55 47.118.199.205 47.118.199.215
ns2.alidns.com47.118.199.216 139.224.142.116 39.96.153.56 120.76.107.46 120.76.107.56 39.96.153.46 139.224.142.126 47.118.199.206 2408:4009:501::2AS37963 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., CN120.76.107.46 120.76.107.56 139.224.142.116 139.224.142.126 2408:4009:501::2 39.96.153.46 39.96.153.56 47.118.199.206 47.118.199.216

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.alidns.com, ns2.alidns.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

pass

18 of 18 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.alidns.com 39.96.153.45NOERROR, 162 ms, authoritativenoyes / yesrefused-
ns1.alidns.com 120.76.107.45NOERROR, 205 ms, authoritativenoyes / yesrefused-
ns1.alidns.com 139.224.142.115NOERROR, 192 ms, authoritativenoyes / yesrefused-
ns1.alidns.com 47.118.199.205NOERROR, 203 ms, authoritativenoyes / yesrefused-
ns1.alidns.com 139.224.142.125NOERROR, 196 ms, authoritativenoyes / yesrefused-
ns1.alidns.com 47.118.199.215NOERROR, 238 ms, authoritativenoyes / yesrefused-
ns1.alidns.com 120.76.107.55NOERROR, 208 ms, authoritativenoyes / yesrefused-
ns1.alidns.com 39.96.153.55NOERROR, 140 ms, authoritativenoyes / yesrefused-
ns1.alidns.com 2408:4009:501::1NOERROR, 209 ms, authoritativenoyes / yesrefused-
ns2.alidns.com 47.118.199.216NOERROR, 196 ms, authoritativenoyes / yesrefused-
ns2.alidns.com 139.224.142.116NOERROR, 228 ms, authoritativenoyes / yesrefused-
ns2.alidns.com 39.96.153.56NOERROR, 138 ms, authoritativenoyes / yesrefused-
ns2.alidns.com 120.76.107.46NOERROR, 191 ms, authoritativenoyes / yesrefused-
ns2.alidns.com 120.76.107.56NOERROR, 219 ms, authoritativenoyes / yesrefused-
ns2.alidns.com 39.96.153.46NOERROR, 150 ms, authoritativenoyes / yesrefused-
ns2.alidns.com 139.224.142.126NOERROR, 217 ms, authoritativenoyes / yesrefused-
ns2.alidns.com 47.118.199.206NOERROR, 224 ms, authoritativenoyes / yesrefused-
ns2.alidns.com 2408:4009:501::2NOERROR, 202 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 18 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

warn

serial 2026082616 · primary ns1.alidns.com

Found

Primary (MNAME)
ns1.alidns.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
ns1.alidns.com (39.96.153.45)2026082616
ns1.alidns.com (120.76.107.45)2026082509
ns1.alidns.com (139.224.142.115)2026082709
ns1.alidns.com (47.118.199.205)2026082616
ns1.alidns.com (139.224.142.125)2026082709
ns1.alidns.com (47.118.199.215)2026082616
ns1.alidns.com (120.76.107.55)2026082617
ns1.alidns.com (39.96.153.55)2026082617
ns1.alidns.com (2408:4009:501::1)2026082617
ns2.alidns.com (47.118.199.216)2026082616
ns2.alidns.com (139.224.142.116)2026082616
ns2.alidns.com (39.96.153.56)2026082616
ns2.alidns.com (120.76.107.46)2026081813
ns2.alidns.com (120.76.107.56)2026082617
ns2.alidns.com (39.96.153.46)2026082617
ns2.alidns.com (139.224.142.126)2026082509
ns2.alidns.com (47.118.199.206)2026082616
ns2.alidns.com (2408:4009:501::2)2026082617

Checks

  • !
    Serials differ
    The nameservers serve different versions of the zone: 2026081813 on ns2.alidns.com (120.76.107.46); 2026082509 on ns1.alidns.com (120.76.107.45), ns2.alidns.com (139.224.142.126); 2026082616 on ns1.alidns.com (39.96.153.45), ns1.alidns.com (47.118.199.205), ns1.alidns.com (47.118.199.215), ns2.alidns.com (47.118.199.216), ns2.alidns.com (139.224.142.116), ns2.alidns.com (39.96.153.56), ns2.alidns.com (47.118.199.206); 2026082617 on ns1.alidns.com (120.76.107.55), ns1.alidns.com (39.96.153.55), ns1.alidns.com (2408:4009:501::1), ns2.alidns.com (120.76.107.56), ns2.alidns.com (39.96.153.46), ns2.alidns.com (2408:4009:501::2); 2026082709 on ns1.alidns.com (139.224.142.115), ns1.alidns.com (139.224.142.125). 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 ns1.alidns.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

fail

2 records at the apex

Found

Read from
39.96.153.45:53
TypeValueTTL
NSns1.alidns.com.86400
NSns2.alidns.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.
  • ✗
    CNAME at the apex
    The zone apex is a CNAME to 89.idc.wuxiu.org. A CNAME can't coexist with the SOA and NS records (RFC 1034); use your provider's ALIAS/flattening feature instead.
    #33
  • ✓ 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