bt520.com.cn - robtex.com
bt520.com.cn
| DNSSEC | ⚠️ Not signed | ||||||
com.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=2030498314 | ||||||
Subdomains
www.bt520.com.cn |
Same first word
Similar names
DNS History
11 records (0 active, 11 former)
○NSdm1.longmingdns.com2026-03-23 → 2026-03-23 · 3 obs
○ 2017-03-15 17:16:34
● 2026-03-23 09:13:58
○ 2026-04-05 10:06:36
● 2026-03-23 09:13:58
○ 2026-04-05 10:06:36
○NSdm2.longmingdns.com2026-03-23 → 2026-03-23 · 3 obs
○ 2017-03-15 17:16:34
● 2026-03-23 09:13:58
○ 2026-04-05 10:06:36
● 2026-03-23 09:13:58
○ 2026-04-05 10:06:36
○NSf1g1ns1.dnspod.net2015-05-27 → 2015-05-27 · 3 obs
● 2015-05-27 12:06:38
○ 2015-10-18 21:36:38
○ 2026-04-05 10:06:36
○ 2015-10-18 21:36:38
○ 2026-04-05 10:06:36
○NSf1g1ns2.dnspod.net2015-05-27 → 2015-05-27 · 3 obs
● 2015-05-27 12:06:38
○ 2016-07-11 18:37:32
○ 2026-04-05 10:06:36
○ 2016-07-11 18:37:32
○ 2026-04-05 10:06:36
○NSjuming.dnsdun.com2016-07-11 → 2017-03-15 · 5 obs
○ 2015-10-18 21:36:38
● 2016-07-11 18:37:32
● 2017-03-15 17:16:34
○ 2026-03-23 09:13:58
○ 2026-04-05 10:06:36
● 2016-07-11 18:37:32
● 2017-03-15 17:16:34
○ 2026-03-23 09:13:58
○ 2026-04-05 10:06:36
○NSjuming.dnsdun.net2016-07-11 → 2017-03-15 · 5 obs
○ 2015-10-18 21:36:38
● 2016-07-11 18:37:32
● 2017-03-15 17:16:34
○ 2026-03-23 09:13:58
○ 2026-04-05 10:06:36
● 2016-07-11 18:37:32
● 2017-03-15 17:16:34
○ 2026-03-23 09:13:58
○ 2026-04-05 10:06:36
○NSns1.51dns.com2015-10-18 → 2015-10-18 · 4 obs
○ 2015-05-27 12:06:38
● 2015-10-18 21:36:38
○ 2016-07-11 18:37:32
○ 2026-04-05 10:06:36
● 2015-10-18 21:36:38
○ 2016-07-11 18:37:32
○ 2026-04-05 10:06:36
○A156.232.170.2232026-03-23 → 2026-03-23 · 3 obs
○ 2017-03-15 17:16:34
● 2026-03-23 09:13:58
○ 2026-04-05 10:06:36
● 2026-03-23 09:13:58
○ 2026-04-05 10:06:36
○A172.106.242.1442017-03-15 → 2017-03-15 · 4 obs
○ 2016-03-16 06:38:28
● 2017-03-15 17:16:34
○ 2026-03-23 09:13:58
○ 2026-04-05 10:06:36
● 2017-03-15 17:16:34
○ 2026-03-23 09:13:58
○ 2026-04-05 10:06:36
○A203.195.212.2462015-05-27 → 2015-05-27 · 3 obs
● 2015-05-27 12:06:38
○ 2015-10-18 21:36:38
○ 2026-04-05 10:06:36
○ 2015-10-18 21:36:38
○ 2026-04-05 10:06:36
○A59.188.136.712015-10-18 → 2015-10-18 · 4 obs
○ 2015-05-27 12:06:38
● 2015-10-18 21:36:38
○ 2016-03-16 06:38:28
○ 2026-04-05 10:06:36
● 2015-10-18 21:36:38
○ 2016-03-16 06:38:28
○ 2026-04-05 10:06:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
✅ Authoritative Response
Server:203.119.29.1
NS records: a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn, e.dns.cn
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 871ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|