o9sr.cn - robtex.com
o9sr.cn
| DNSSEC | ⚠️ Not signed | ||||||
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=2034720402 | ||||||
Similar names
DNS History
3 records (0 active, 3 former)
○NSdns1.zhangcong.top2017-05-19 → 2017-05-19 · 3 obs
● 2017-05-19 23:00:36
○ 2026-03-27 00:33:36
○ 2026-04-27 20:00:48
○ 2026-03-27 00:33:36
○ 2026-04-27 20:00:48
○NSdns1.zhangcong.top.o9sr.cn2017-05-19 → 2017-05-19 · 3 obs
● 2017-05-19 23:00:36
○ 2026-03-27 00:33:36
○ 2026-04-27 20:00:48
○ 2026-03-27 00:33:36
○ 2026-04-27 20:00:48
○NSdns2.zhangcong.top2017-05-19 → 2017-05-19 · 3 obs
● 2017-05-19 23:00:36
○ 2026-03-27 00:33:36
○ 2026-04-27 20:00:48
○ 2026-03-27 00:33:36
○ 2026-04-27 20:00:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | b.dns.cn, e.dns.cn, d.dns.cn, a.dns.cn... | - |
✅ Authoritative Response
Server:203.119.28.1
NS records: b.dns.cn, e.dns.cn, d.dns.cn, a.dns.cn, c.dns.cn
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 3455ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|