gnnu.cn - robtex.com
gnnu.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 192.168.159.1 | ||||||
| A | 192.168.247.1 | ||||||
| A | 218.64.216.230🇨🇳 CHINANET-BACKBONE218.64.0.0/16 China Telecom Data Network Management Division Network Operation & Maintenance Department No 19 Chaoyangmen North Street Dongcheng District | ||||||
| NS | dns11.gnnu.cn ⭐ | ||||||
| A | 192.168.159.1 | ||||||
| A | 192.168.247.1 | ||||||
| A | 218.64.216.230🇨🇳 CHINANET-BACKBONE218.64.0.0/16 China Telecom Data Network Management Division Network Operation & Maintenance Department No 19 Chaoyangmen North Street Dongcheng District | ||||||
| NS | dns22.gnnu.cn ⚠️ Not in zone NS records | ||||||
| A | 218.64.216.233🇨🇳 CHINANET-BACKBONE218.64.0.0/16 China Telecom Data Network Management Division Network Operation & Maintenance Department No 19 Chaoyangmen North Street Dongcheng District | ||||||
| SOA | dns11.gnnu.cnhostmaster@gnnu.cn serial=74845 | ||||||
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=2034715647 | ||||||
rank #8561 in the tld
Subdomains
Same first word
Similar names
DNS History
9 records (5 active, 4 former)
●NSdns11.gnnu.cn2015-07-17 → 2026-04-26 · 2 obs
● 2026-04-26 23:05:58
●NSdns22.gnnu.cn2015-11-21 → 2026-04-26 · 3 obs
● 2015-11-21 07:08:54
● 2026-04-26 23:05:58
○MXmail.gnnu.cn2015-07-17 → 2017-05-07 · 4 obs
● 2017-05-07 19:18:56
○ 2026-03-02 23:20:16
○ 2026-04-26 23:05:58
○A169.254.195.482015-07-17 → 2017-05-07 · 4 obs
● 2017-05-07 19:18:56
○ 2026-03-02 23:20:16
○ 2026-04-26 23:05:58
●A192.168.159.12026-03-02 → 2026-04-26 · 3 obs
● 2026-03-02 23:20:16
● 2026-04-26 23:05:58
●A192.168.247.12026-03-02 → 2026-04-26 · 3 obs
● 2026-03-02 23:20:16
● 2026-04-26 23:05:58
○A218.64.216.1062015-07-17 → 2017-05-07 · 4 obs
● 2017-05-07 19:18:56
○ 2026-03-02 23:20:16
○ 2026-04-26 23:05:58
●A218.64.216.2302015-07-17 → 2026-04-26 · 2 obs
● 2026-04-26 23:05:58
○A218.87.140.1462015-07-17 → 2017-05-07 · 4 obs
● 2017-05-07 19:18:56
○ 2026-03-02 23:20:16
○ 2026-04-26 23:05:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | b.dns.cn, c.dns.cn, d.dns.cn, e.dns.cn... | - |
| gnnu.cn | dns11.gnnu.cn, dns22.gnnu.cn | 2 records |
✅ Authoritative Response
Server:218.64.216.230
NS records: dns11.gnnu.cn, dns22.gnnu.cn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for gnnu.cn (unsigned zone)
⏱️ Timing
Total: 3701ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 3 | 192.168.247.1, 218.64.216.230... |
| NS | 1 | dns11.gnnu.cn |
| SOA | 1 | dns11.gnnu.cn hostmaster.gnnu.cn |
📌 Glue Records Collected
Total: 2
In-bailiwick: 2 (dns11.gnnu.cn, dns22.gnnu.cn)
Analysis
Hierarchy
gnnu.cn is the parent of dns22.gnnu.cn, zs.gnnu.cn, mail.gnnu.cn, www.gnnu.cn, norc.gnnu.cn and several other host names.
IP Addresses
Three IP numbers for gnnu.cn are 192.168.159.1, 192.168.247.1 and 218.64.216.230.
Other host names such as suedstern-todesstern.gate.uni-erlangen.de and dns11.gnnu.cn share IP numbers with gnnu.cn.
Name Servers
gnnu.cn's delegation is to two name servers dns11.gnnu.cn and dns22.gnnu.cn.
Host names with three IP numbers:
dns11.gnnu.cn points to 192.168.159.1, 192.168.247.1 and 218.64.216.230.
Host names with one IP number:
dns22.gnnu.cn points to 218.64.216.233.