psbc.com

Checked 22 October 2026, 10:22 UTC · via 8.8.8.8
✗Problems found
25 passed 2 warnings 2 failed 2 info

Registration

info

.com generic · Beijing Guoxu Network Technology Co., Ltd. · expires 2027-12-03

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Beijing Guoxu Network Technology Co., Ltd.
Registered
3 December 1999
Last changed
18 July 2025
Expires
3 December 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
ns1.xdnsvip.cn, ns2.xdnsvip.com, ns3.xdnsvip.info
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 2027-12-03 #3
    The registration is valid until 2027-12-03 (407 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited, client update prohibited, server delete prohibited, server transfer prohibited, server update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

ns1.xdnsvip.cn, ns2.xdnsvip.com, ns3.xdnsvip.info

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.xdnsvip.cn, ns2.xdnsvip.com, ns3.xdnsvip.info
NS in the zone
ns1.xdnsvip.cn, ns2.xdnsvip.com, ns3.xdnsvip.info
NameserverAddressesNetwork (AS)Glue
ns1.xdnsvip.cn47.87.139.114 2408:4004:1e2:5542::66 2408:4002:101e:247b:256f:f783:c0bd:15f5 2409:8c70:3a50:221f::bAS45102 ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS9808 CHINAMOBILE-CN - China Mobile Communications Group Co., Ltd., CN-
ns2.xdnsvip.com8.210.76.60 2408:4004:1e2:5542::88 2408:4003:10e9:4700:3a08:8514:7c22:2ba5AS45102 ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN119.167.207.167 125.122.32.90 182.44.79.18 218.78.129.107 2408:4003:10e9:4700:3a08:8514:7c22:2ba5 2408:4004:1e2:5542::88 39.104.19.20 39.108.103.60
ns3.xdnsvip.info123.57.226.105 36.133.13.30 119.96.62.97 159.226.185.57 2408:4006:1108:7b14:28e7:66f7:1319:a4b9 2409:8c50:ffff:2b89::d 2408:400a:63:d4e9:8d3b:261a:ac7:7f6e 2400:dd01:1015:419:10:10:41:9AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS56047 CMNET-Hunan-AP - China Mobile communications corporation, CN AS58563 CHINATELECOM-Hubei-IDC - CHINANET Hubei province network, CN AS7497 CSTNET-AS-AP - Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS), CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS56047 CMNET-Hunan-AP - China Mobile communications corporation, CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS7497 CSTNET-AS-AP - Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS), CN-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns1.xdnsvip.cn, ns2.xdnsvip.com, ns3.xdnsvip.info.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: ns2.xdnsvip.com (glue 119.167.207.167, 125.122.32.90, 182.44.79.18, 218.78.129.107, 2408:4003:10e9:4700:3a08:8514:7c22:2ba5, 2408:4004:1e2:5542::88, 39.104.19.20, 39.108.103.60, zone 8.210.76.60, 2408:4004:1e2:5542::88, 2408:4003:10e9:4700:3a08:8514:7c22:2ba5). Update the glue at your registrar.
    #8
  • ✓ All names resolve #9
    Every nameserver name has an address and is not an alias.
  • ✓ Nameservers in different networks #10
    The nameservers are spread over 6 IPv4 /24s and 8 IPv6 /48s.
  • ✓ 6 autonomous systems #11
    The nameservers are spread over: AS37963 (ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN): 7 addresses; AS45102 (ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN): 2 addresses; AS56047 (CMNET-Hunan-AP - China Mobile communications corporation, CN): 2 addresses; AS58563 (CHINATELECOM-Hubei-IDC - CHINANET Hubei province network, CN): 1 address; AS7497 (CSTNET-AS-AP - Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS), CN): 2 addresses; AS9808 (CHINAMOBILE-CN - China Mobile Communications Group Co., Ltd., CN): 1 address.
  • ✓ Nameserver names under 3 TLDs #12
    Nameserver names use the TLDs .cn, .com, .info.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

fail

14 of 15 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.xdnsvip.cn 47.87.139.114NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns1.xdnsvip.cn 2408:4004:1e2:5542::66NOERROR, 168 ms, authoritativenono / yesrefused-
ns1.xdnsvip.cn 2408:4002:101e:247b:256f:f783:c0bd:15f5NOERROR, 199 ms, authoritativenoyes / yesrefused-
ns1.xdnsvip.cn 2409:8c70:3a50:221f::bNOERROR, 315 ms, authoritativenoyes / yesrefused-
ns2.xdnsvip.com 8.210.76.60NOERROR, 212 ms, authoritativenoyes / yesrefused-
ns2.xdnsvip.com 2408:4004:1e2:5542::88NOERROR, 157 ms, authoritativenono / yesrefused-
ns2.xdnsvip.com 2408:4003:10e9:4700:3a08:8514:7c22:2ba5no responsenono / no--
ns3.xdnsvip.info 123.57.226.105NOERROR, 150 ms, authoritativenoyes / yesrefused-
ns3.xdnsvip.info 36.133.13.30NOERROR, 222 ms, authoritativenoyes / yesrefused-
ns3.xdnsvip.info 119.96.62.97NOERROR, 187 ms, authoritativenoyes / yesrefused-
ns3.xdnsvip.info 159.226.185.57NOERROR, 294 ms, authoritativenoyes / yesrefused-
ns3.xdnsvip.info 2408:4006:1108:7b14:28e7:66f7:1319:a4b9NOERROR, 232 ms, authoritativenono / yesrefused-
ns3.xdnsvip.info 2409:8c50:ffff:2b89::dNOERROR, 280 ms, authoritativenoyes / yesrefused-
ns3.xdnsvip.info 2408:400a:63:d4e9:8d3b:261a:ac7:7f6eNOERROR, 153 ms, authoritativenoyes / yesrefused-
ns3.xdnsvip.info 2400:dd01:1015:419:10:10:41:9NOERROR, 270 ms, authoritativenoyes / yesrefused-

Checks

  • ✗
    Nameservers not responding
    These addresses did not answer, so resolvers waste time on timeouts: ns2.xdnsvip.com (2408:4003:10e9:4700:3a08:8514:7c22:2ba5): read udp [2a01:4f8:1c1c:eebf::1]:38325->[2408:4003:10e9:4700:3a08:8514:7c22:2ba5]: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: ns1.xdnsvip.cn (2408:4004:1e2:5542::66): dial tcp [2408:4004:1e2:5542::66]:53: i/o timeout; ns2.xdnsvip.com (2408:4004:1e2:5542::88): dial tcp [2408:4004:1e2:5542::88]:53: i/o timeout; ns3.xdnsvip.info (2408:4006:1108:7b14:28e7:66f7:1319:a4b9): dial tcp [2408:4006:1108:7b14:28e7:66f7:1319:a4b9]:53: i/o timeout.
    #19
  • ✓ EDNS supported #20
    All nameservers support EDNS(0).
  • ✓ Public addresses #21
    All nameserver addresses are publicly routable.

SOA

pass

serial 3083 · primary ns1.xdnsvip.cn

Found

Primary (MNAME)
ns1.xdnsvip.cn
Contact (RNAME)
yunwei.xdns.cn
Serial
3083
Refresh / retry
7200 s / 600 s
Expire
1209600 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
ns1.xdnsvip.cn (47.87.139.114)3083
ns1.xdnsvip.cn (2408:4004:1e2:5542::66)3083
ns1.xdnsvip.cn (2408:4002:101e:247b:256f:f783:c0bd:15f5)3083
ns1.xdnsvip.cn (2409:8c70:3a50:221f::b)3083
ns2.xdnsvip.com (8.210.76.60)3083
ns2.xdnsvip.com (2408:4004:1e2:5542::88)3083
ns3.xdnsvip.info (123.57.226.105)3083
ns3.xdnsvip.info (36.133.13.30)3083
ns3.xdnsvip.info (119.96.62.97)3083
ns3.xdnsvip.info (159.226.185.57)3083
ns3.xdnsvip.info (2408:4006:1108:7b14:28e7:66f7:1319:a4b9)3083
ns3.xdnsvip.info (2409:8c50:ffff:2b89::d)3083
ns3.xdnsvip.info (2408:400a:63:d4e9:8d3b:261a:ac7:7f6e)3083
ns3.xdnsvip.info (2400:dd01:1015:419:10:10:41:9)3083

Checks

  • ✓ Serial 3083 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 10m, expire 14d, negative TTL 10m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.xdnsvip.cn is one of the listed nameservers.
  • ✓ Contact yunwei@xdns.cn #25
    The SOA RNAME yunwei.xdns.cn means yunwei@xdns.cn.
  • ✓ Counter serial #26
    The serial 3083 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

10 records at the apex

Found

Read from
47.87.139.114:53
TypeValueTTL
SOAns1.xdnsvip.cn. yunwei.xdns.cn. 3083 7200 600 1209600 600600
NSns1.xdnsvip.cn.600
NSns2.xdnsvip.com.600
NSns3.xdnsvip.info.600
A103.22.252.1033600
MX10 mail-mx1.psbc.com.600
TXT"VISA=E13890F502FF157F1B1DED099D72FC47"120
TXT"v=spf1 ip4:220.248.242.14 ip4:220.248.242.15 ip4:220.248.253.14 ip4:220.248.253.15 ip4:112.26.72.14 ip4:112.26.72.15 ip4:112.26.72.18 ip4:220.248.242.18 -all"120
TXT"VISA=4476213AAC5A152F48621B44077E3070"600
TXT"VISA=B36FAACB03E7F09E269D2266459E037F"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 10m, NS 10m. The NS TTL at the parent is 2d and in the zone 10m; 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