pcustc.cn - robtex.com
pcustc.cn
cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a.dns.cn ⭐ | ||||||
| NS | b.dns.cn | ||||||
| NS | c.dns.cn | ||||||
| NS | d.dns.cn | ||||||
| NS | e.dns.cn | ||||||
| NS | ns.cernet.net ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2034546407 | ||||||
Same first word
pcustc.cn |
Similar names
DNS History
5 records (4 active, 1 former)
●NSns19.xincache.com2015-06-24 → 2026-03-18 · 2 obs
● 2026-03-18 17:41:20
●NSns20.xincache.com2015-06-24 → 2026-03-18 · 2 obs
● 2026-03-18 17:41:20
○A220.181.136.242015-06-24 → 2016-12-06 · 4 obs
● 2016-12-06 10:17:42
○ 2019-12-20 13:00:46
○ 2026-03-18 17:41:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | e.dns.cn, a.dns.cn, c.dns.cn, d.dns.cn... | - |
| pcustc.cn | ns19.xincache.com, ns20.xincache.com | - |
✅ Authoritative Response
Server: 117.89.178.184
NS records: ns19.xincache.com, ns20.xincache.com
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
Validation error at pcustc.cn: Error: DNS query timeout: 203.119.29.1 for DS pcustc.cn
⏱️ Timing
Total: 4312ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | ns19.xincache.com, ns20.xincache.com |
| MX | 2 | mxbiz1.qq.com (pri: 5), mxbiz2.qq.com (pri: 10) |
| TXT | 1 | v=spf1 include:spf.mail.qq.com ~all |
| SOA | 1 | ns19.xincache.com enterprise1dnsadmin.dn |
Analysis
Name Servers
pcustc.cn is delegated to two name servers: ns19.xincache.com and ns20.xincache.com.
pcustc.cn uses the same name server setup as other domains such as bjshenpu.com, sunlitchina.com, xinquan.com, veiluo.com and nanpujituan.com.
pcustc.cn shares name servers with other domains at least partially, for example sasdragon.com.cn, hongtai-hk.net, sayu.net.cn, nipponcore.com and baohe.gov.cn.
These name servers are commonly used with the name servers ns11.xincache.com and ns12.xincache.com.
Eight IP numbers per host:
The host name ns19.xincache.com points to 2402:4e00:1470:2::e, 2402:4e00:1730::e, 1.12.0.4, 36.155.149.180, 112.80.181.45, 117.89.178.173, 125.94.59.210 and 129.211.176.209.
Seven IP numbers per host:
The host name ns20.xincache.com points to 2402:4e00:111:fff::c, 1.12.0.1, 36.155.149.176, 112.80.181.111, 117.89.178.184, 129.211.176.239 and 163.177.5.23.
Mail Servers
Two mail servers mxbiz1.qq.com and mxbiz2.qq.com handle pcustc.cn.
pcustc.cn shares the same mail server setup as other domains, for instance andyeason.cn, nbsensor.com, aiwisesun.cn, gzdjy.org and anylure.com.
pcustc.cn shares some mail servers with other domains, at least partially; examples include astraea.com.au, ysxdgy.com and fyltkj.com.
Host names with two IPs:
mxbiz1.qq.com points to 203.205.147.218 and 203.205.232.191.
Host names with one IP:
mxbiz2.qq.com points to 203.205.232.191.
Hosts pointing to 203.205.232.191: mxbiz1.qq.com and mxbiz2.qq.com.