512bj.cn - robtex.com
512bj.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.judns.com ⚠️ Not in zone NS records | ||||||
| A | 162.159.27.251Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns2.judns.com ⚠️ Not in zone NS records | ||||||
| A | 162.159.27.251Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
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=2035130167 | ||||||
Same first word
Similar names
DNS History
13 records (2 active, 11 former)
○NS(root)2015-08-08 → 2017-04-10 · 4 obs
● 2017-04-10 15:22:10
○ 2026-05-01 15:47:44
○ 2026-08-04 02:50:16
○NSns1.365cyd.net2015-12-06 → 2017-04-10 · 5 obs
● 2015-12-06 15:45:38
● 2017-04-10 15:22:10
○ 2026-05-01 15:47:44
○ 2026-08-04 02:50:16
○NSns1.jiasule.net2015-08-08 → 2017-04-10 · 4 obs
● 2017-04-10 15:22:10
○ 2026-05-01 15:47:44
○ 2026-08-04 02:50:16
●NSns1.judns.com2026-05-01 → 2026-08-04 · 3 obs
● 2026-05-01 15:47:44
● 2026-08-04 02:50:16
○NSns1.julydns.com2026-05-01 → 2026-05-01 · 3 obs
● 2026-05-01 15:47:44
○ 2026-08-04 02:50:16
○NSns1.kangdns.com2017-04-10 → 2017-04-10 · 4 obs
● 2017-04-10 15:22:10
○ 2026-05-01 15:47:44
○ 2026-08-04 02:50:16
○NSns2.365cyd.net2015-12-06 → 2017-04-10 · 5 obs
● 2015-12-06 15:45:38
● 2017-04-10 15:22:10
○ 2026-05-01 15:47:44
○ 2026-08-04 02:50:16
○NSns2.jiasule.net2015-08-08 → 2017-04-10 · 4 obs
● 2017-04-10 15:22:10
○ 2026-05-01 15:47:44
○ 2026-08-04 02:50:16
●NSns2.judns.com2026-05-01 → 2026-08-04 · 3 obs
● 2026-05-01 15:47:44
● 2026-08-04 02:50:16
○NSns2.julydns.com2026-05-01 → 2026-05-01 · 3 obs
● 2026-05-01 15:47:44
○ 2026-08-04 02:50:16
○NSns2.kangdns.com2017-04-10 → 2017-04-10 · 4 obs
● 2017-04-10 15:22:10
○ 2026-05-01 15:47:44
○ 2026-08-04 02:50:16
○A154.222.229.2352026-05-01 → 2026-05-01 · 3 obs
● 2026-05-01 15:47:44
○ 2026-08-04 02:50:16
○A221.231.138.752015-08-08 → 2017-04-10 · 4 obs
● 2017-04-10 15:22:10
○ 2026-05-01 15:47:44
○ 2026-08-04 02:50:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| 512bj.cn | ns1.judns.com, ns2.judns.com | - |
✅ Authoritative Response
Server:162.159.27.251
NS records: ns1.judns.com, ns2.judns.com
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
Validation error at 512bj.cn: Error: DNS query timeout: 203.119.25.1 for DS 512bj.cn
⏱️ Timing
Total: 3871ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 154.222.229.235 |
| NS | 2 | ns1.julydns.com, ns2.julydns.com |
| SOA | 1 | ns1.julydns.com master.jmdns.com |
Analysis
Name Servers
512bj.cn uses two name servers for its delegation: ns1.judns.com and ns2.judns.com.
512bj.cn shares its name server setup with other domains, including ehanmy.cn, hxpb.cn, hjajigio3.cn and two others.
512bj.cn partially shares its NS delegation with several other domains, including 917chuguo.com, xxgcb.com, 7kzs.com and two others.
These name servers are regularly seen alongside ns1.julydns.com and ns2.julydns.com as name servers.
ns1.judns.com resolves to 162.159.27.251; ns2.judns.com resolves to the same IP address, 162.159.27.251.
Both ns1.judns.com and ns2.judns.com resolve to 162.159.27.251 IP addresses each.