pc51.cn - robtex.com
pc51.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 20.48.18.157🇯🇵 Microsoft20.48.0.0/12 | ||||||
| NS | vip3.alidns.com ⭐ | ||||||
| A | 2408:4009:500::3🇨🇳 Alibaba-Cloud2408:4009:500::/48 Alibaba Group | ||||||
| A | 8.212.93.3🇭🇰 Alibaba_Cloud_SEC8.212.93.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811 | ||||||
| A | 140.205.1.5🇨🇳 Alibaba-Cloud140.205.1.0/24 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| A | 170.33.32.210🇸🇬 Alibaba_Cloud_SEC170.33.32.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811 | ||||||
| A | 170.33.40.136🇸🇬 Alibaba_Cloud_SEC170.33.40.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811 | ||||||
| A | 170.33.73.26🇸🇬 Alibaba_Cloud_SEC170.33.73.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811 | ||||||
| A | 170.33.80.10🇸🇬 Alibaba_Cloud_SEC170.33.80.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811 | ||||||
| NS | vip4.alidns.com | ||||||
| A | 2408:4009:500::4🇨🇳 Alibaba-Cloud2408:4009:500::/48 Alibaba Group | ||||||
| A | 8.212.93.4🇭🇰 Alibaba_Cloud_SEC8.212.93.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811 | ||||||
| A | 140.205.1.6🇨🇳 Alibaba-Cloud140.205.1.0/24 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District, | ||||||
| A | 170.33.32.211🇸🇬 Alibaba_Cloud_SEC170.33.32.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811 | ||||||
| A | 170.33.40.137🇸🇬 Alibaba_Cloud_SEC170.33.40.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811 | ||||||
| A | 170.33.73.27🇸🇬 Alibaba_Cloud_SEC170.33.73.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811 | ||||||
| A | 170.33.80.11🇸🇬 Alibaba_Cloud_SEC170.33.80.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811 | ||||||
| SOA | vip3.alidns.comhostmaster@hichina.com 2026-01-07 #16 | ||||||
cn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| 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=2034784608 | ||||||
Same first word
Similar names
cp15.com |
pc15.fr |
51pc.la |
15pc.com |
cp15.org |
51pc.org.cn |
51cp.net |
p51c.com |
p1c5.com |
15cp.com |
pc15.net |
51cp.cc |
51pc.cn |
51cp.com |
cp51.com |
pc15.de |
DNS History
19 records (3 active, 16 former)
○NSdns1.iidns.com2015-05-21 → 2016-03-30 · 4 obs
● 2015-05-21 07:01:10
● 2016-03-30 21:45:34
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
● 2016-03-30 21:45:34
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
○NSdns10.hichina.com2016-08-12 → 2017-10-19 · 5 obs
○ 2016-03-30 21:45:34
● 2016-08-12 14:27:30
● 2017-10-19 18:02:36
○ 2026-05-02 04:21:06
○ 2026-05-12 23:29:12
● 2016-08-12 14:27:30
● 2017-10-19 18:02:36
○ 2026-05-02 04:21:06
○ 2026-05-12 23:29:12
○NSdns2.iidns.com2015-05-21 → 2016-03-30 · 4 obs
● 2015-05-21 07:01:10
● 2016-03-30 21:45:34
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
● 2016-03-30 21:45:34
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
○NSdns3.iidns.com2015-05-21 → 2016-03-30 · 4 obs
● 2015-05-21 07:01:10
● 2016-03-30 21:45:34
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
● 2016-03-30 21:45:34
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
○NSdns4.iidns.com2015-05-21 → 2016-03-30 · 4 obs
● 2015-05-21 07:01:10
● 2016-03-30 21:45:34
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
● 2016-03-30 21:45:34
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
○NSdns5.iidns.com2015-05-21 → 2016-03-30 · 4 obs
● 2015-05-21 07:01:10
● 2016-03-30 21:45:34
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
● 2016-03-30 21:45:34
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
○NSdns6.iidns.com2015-05-21 → 2016-03-30 · 4 obs
● 2015-05-21 07:01:10
● 2016-03-30 21:45:34
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
● 2016-03-30 21:45:34
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
○NSdns9.hichina.com2016-08-12 → 2017-10-19 · 5 obs
○ 2016-03-30 21:45:34
● 2016-08-12 14:27:30
● 2017-10-19 18:02:36
○ 2026-05-02 04:21:06
○ 2026-05-12 23:29:12
● 2016-08-12 14:27:30
● 2017-10-19 18:02:36
○ 2026-05-02 04:21:06
○ 2026-05-12 23:29:12
●NSvip3.alidns.com2026-05-02 → 2026-05-12 · 3 obs
○ 2017-10-19 18:02:36
● 2026-05-02 04:21:06
● 2026-05-12 23:29:12
● 2026-05-02 04:21:06
● 2026-05-12 23:29:12
●NSvip4.alidns.com2026-05-02 → 2026-05-12 · 3 obs
○ 2017-10-19 18:02:36
● 2026-05-02 04:21:06
● 2026-05-12 23:29:12
● 2026-05-02 04:21:06
● 2026-05-12 23:29:12
○A107.167.19.682015-12-20 → 2015-12-20 · 4 obs
○ 2015-05-21 07:01:10
● 2015-12-20 23:06:50
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
● 2015-12-20 23:06:50
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
○A107.167.19.692015-12-20 → 2015-12-20 · 4 obs
○ 2015-05-21 07:01:10
● 2015-12-20 23:06:50
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
● 2015-12-20 23:06:50
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
○A107.167.19.702015-12-20 → 2015-12-20 · 4 obs
○ 2015-05-21 07:01:10
● 2015-12-20 23:06:50
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
● 2015-12-20 23:06:50
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
○A107.167.19.712015-12-20 → 2015-12-20 · 4 obs
○ 2015-05-21 07:01:10
● 2015-12-20 23:06:50
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
● 2015-12-20 23:06:50
○ 2016-08-12 14:27:30
○ 2026-05-12 23:29:12
○A198.148.92.872015-05-21 → 2015-05-21 · 3 obs
● 2015-05-21 07:01:10
○ 2017-10-19 18:02:36
○ 2026-05-12 23:29:12
○ 2017-10-19 18:02:36
○ 2026-05-12 23:29:12
○A198.148.92.882015-05-21 → 2015-05-21 · 3 obs
● 2015-05-21 07:01:10
○ 2017-10-19 18:02:36
○ 2026-05-12 23:29:12
○ 2017-10-19 18:02:36
○ 2026-05-12 23:29:12
●A20.48.18.1572026-05-02 → 2026-05-12 · 3 obs
○ 2017-10-19 18:02:36
● 2026-05-02 04:21:06
● 2026-05-12 23:29:12
● 2026-05-02 04:21:06
● 2026-05-12 23:29:12
○A43.255.225.2492016-08-12 → 2017-10-19 · 5 obs
○ 2015-12-20 23:06:50
● 2016-08-12 14:27:30
● 2017-10-19 18:02:36
○ 2026-05-02 04:21:06
○ 2026-05-12 23:29:12
● 2016-08-12 14:27:30
● 2017-10-19 18:02:36
○ 2026-05-02 04:21:06
○ 2026-05-12 23:29:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | e.dns.cn, a.dns.cn, c.dns.cn, d.dns.cn... | - |
| pc51.cn | vip3.alidns.com, vip4.alidns.com | - |
✅ Authoritative Response
Server:170.33.80.10
NS records: vip3.alidns.com, vip4.alidns.com
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
Validation error at pc51.cn: Error: DNS query timeout: 203.119.29.1 for DS pc51.cn
⏱️ Timing
Total: 4631ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 20.48.18.157 |
| NS | 2 | vip3.alidns.com, vip4.alidns.com |
| SOA | 1 | vip3.alidns.com hostmaster.hichina.com |
Analysis
IP Addresses
pc51.cn resolves to a single IP: 20.48.18.157.
Name Servers
pc51.cn has two name servers: vip3.alidns.com and vip4.alidns.com.
pc51.cn shares the same name server setup as other domains, for example viveport.cn, bigtreefinance.com, tukkk.com, hj-mail.com and tplcn.cn.
pc51.cn shares some name servers with other domains, for example topreels.com, stardust-tv.com, wxidg.com, gycloudgslb.com and uu898.com.
These name servers are commonly used together with vip1.alidns.com and vip2.alidns.com.
Host names with seven IP numbers: The host name vip3.alidns.com points to 2408:4009:500::3, 8.212.93.3, 140.205.1.5, 170.33.32.210, 170.33.40.136, 170.33.73.26 and 170.33.80.10; the host name vip4.alidns.com points to 2408:4009:500::4, 8.212.93.4, 140.205.1.6, 170.33.32.211, 170.33.40.137, 170.33.73.27 and 170.33.80.11.