mail.gnnu.cn - robtex.com
mail.gnnu.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 218.64.216.234🇨🇳 CHINANET-BACKBONE218.64.0.0/16 China Telecom Data Network Management Division Network Operation & Maintenance Department No 19 Chaoyangmen North Street Dongcheng District | ||||||
| PTR | mail.gnnu.cn | ||||||
| MX | mail.gnnu.cn ⭐ | ||||||
| A | 218.64.216.234🇨🇳 CHINANET-BACKBONE218.64.0.0/16 China Telecom Data Network Management Division Network Operation & Maintenance Department No 19 Chaoyangmen North Street Dongcheng District | ||||||
| PTR | mail.gnnu.cn | ||||||
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 ⭐ | ||||||
| NS | dns22.gnnu.cn ⚠️ Not in zone NS records | ||||||
| SOA | dns11.gnnu.cnhostmaster@gnnu.cn serial=74849 | ||||||
rank #8572 in the tld
PTR for
MX for
mail.gnnu.cn |
Previously MX for
Same first word
Similar names
DNS History
2 records (2 active, 0 former)
●MXmail.gnnu.cn2026-03-20 → 2026-04-28 · 2 obs
● 2026-03-20 04:14:30
● 2026-04-28 01:43:02
● 2026-04-28 01:43:02
●A218.64.216.2342015-07-16 → 2026-04-28 · 2 obs
● 2015-07-16 18:29:08
● 2026-04-28 01:43:02
● 2026-04-28 01:43:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | c.dns.cn, e.dns.cn, b.dns.cn, a.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: 4016ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 218.64.216.234 |
| MX | 1 | mail.gnnu.cn (pri: 10) |
📌 Glue Records Collected
Total: 2
In-bailiwick: 2 (dns11.gnnu.cn, dns22.gnnu.cn)
Analysis
Mail Server Role
mail.gnnu.cn serves as a mail server for mail.gnnu.cn.
IP Addresses
mail.gnnu.cn points to a single IP: 218.64.216.234.
Mail Servers
mail.gnnu.cn is handled by a single mail server.
mail.gnnu.cn points to IP number 218.64.216.234.