btdown.org.cn - robtex.com
btdown.org.cn
| DNSSEC | ⚠️ Not signed | ||||||
org.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a.dns.cn ⭐ ⚠️ Not in parent delegation | ||||||
| NS | b.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | c.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | cns.cernet.net ⚠️ Not in parent delegation | ||||||
| NS | d.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | e.dns.cn ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2027896997 | ||||||
Same first word
Similar names
DNS History
6 records (0 active, 6 former)
○NSns1.exp.4cun.com2026-02-15 → 2026-02-26 · 5 obs
○ 2017-05-29 00:05:42
● 2026-02-15 04:13:26
● 2026-02-26 14:53:42
○ 2026-03-19 05:28:32
○ 2026-08-07 08:03:14
● 2026-02-15 04:13:26
● 2026-02-26 14:53:42
○ 2026-03-19 05:28:32
○ 2026-08-07 08:03:14
○NSns11.bigwww.com2017-05-29 → 2017-05-29 · 3 obs
● 2017-05-29 00:05:42
○ 2026-02-15 04:13:26
○ 2026-08-07 08:03:14
○ 2026-02-15 04:13:26
○ 2026-08-07 08:03:14
○NSns2.exp.4cun.com2026-02-15 → 2026-02-26 · 5 obs
○ 2017-05-29 00:05:42
● 2026-02-15 04:13:26
● 2026-02-26 14:53:42
○ 2026-03-19 05:28:32
○ 2026-08-07 08:03:14
● 2026-02-15 04:13:26
● 2026-02-26 14:53:42
○ 2026-03-19 05:28:32
○ 2026-08-07 08:03:14
○MXmail.happyisp.com2026-02-15 → 2026-02-26 · 4 obs
● 2026-02-15 04:13:26
● 2026-02-26 14:53:42
○ 2026-03-19 05:28:32
○ 2026-08-07 08:03:14
● 2026-02-26 14:53:42
○ 2026-03-19 05:28:32
○ 2026-08-07 08:03:14
○A127.0.0.12026-02-15 → 2026-02-26 · 5 obs
○ 2017-05-29 00:05:42
● 2026-02-15 04:13:26
● 2026-02-26 14:53:42
○ 2026-03-19 05:28:32
○ 2026-08-07 08:03:14
● 2026-02-15 04:13:26
● 2026-02-26 14:53:42
○ 2026-03-19 05:28:32
○ 2026-08-07 08:03:14
○A218.89.77.1222017-05-29 → 2017-05-29 · 3 obs
● 2017-05-29 00:05:42
○ 2026-02-15 04:13:26
○ 2026-08-07 08:03:14
○ 2026-02-15 04:13:26
○ 2026-08-07 08:03:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | e.dns.cn, c.dns.cn, a.dns.cn, b.dns.cn... | - |
✅ Authoritative Response
Server:203.119.25.1
NS records: e.dns.cn, c.dns.cn, a.dns.cn, b.dns.cn, d.dns.cn
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 2680ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|