ulbu.cn - robtex.com
ulbu.cn
| DNSSEC | ⚠️ Not signed | ||||||
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=2034793090 | ||||||
Same first word
Similar names
DNS History
6 records (0 active, 6 former)
○NSf1g1ns1.dnspod.net2016-01-04 → 2016-01-04 · 3 obs
● 2016-01-04 17:39:50
○ 2017-09-29 11:33:02
○ 2026-05-14 21:34:34
○ 2017-09-29 11:33:02
○ 2026-05-14 21:34:34
○NSf1g1ns2.dnspod.net2016-01-04 → 2016-01-04 · 3 obs
● 2016-01-04 17:39:50
○ 2017-09-29 11:33:02
○ 2026-05-14 21:34:34
○ 2017-09-29 11:33:02
○ 2026-05-14 21:34:34
○NSv1.mydomain1.com2017-09-29 → 2017-09-29 · 4 obs
○ 2016-01-04 17:39:50
● 2017-09-29 11:33:02
○ 2026-04-04 09:27:04
○ 2026-05-14 21:34:34
● 2017-09-29 11:33:02
○ 2026-04-04 09:27:04
○ 2026-05-14 21:34:34
○MXmail.ulbu.cn2017-09-29 → 2017-09-29 · 3 obs
● 2017-09-29 11:33:02
○ 2026-04-04 09:27:04
○ 2026-05-14 21:34:34
○ 2026-04-04 09:27:04
○ 2026-05-14 21:34:34
○A104.216.151.32016-01-04 → 2016-01-04 · 3 obs
● 2016-01-04 17:39:50
○ 2017-09-29 11:33:02
○ 2026-05-14 21:34:34
○ 2017-09-29 11:33:02
○ 2026-05-14 21:34:34
○A198.16.39.372017-09-29 → 2017-09-29 · 4 obs
○ 2016-01-04 17:39:50
● 2017-09-29 11:33:02
○ 2026-04-04 09:27:04
○ 2026-05-14 21:34:34
● 2017-09-29 11:33:02
○ 2026-04-04 09:27:04
○ 2026-05-14 21:34:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | b.dns.cn, a.dns.cn, e.dns.cn, c.dns.cn... | - |
✅ Authoritative Response
Server:2001:dc7:3::1
NS records: b.dns.cn, a.dns.cn, e.dns.cn, c.dns.cn, d.dns.cn
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 2505ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|