dnui.edu.cn - robtex.com
dnui.edu.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | authoritative-dns01 ⭐ | ||||||
| NS | dns1.dnui.edu.cn | ||||||
| A | 219.216.128.5🇨🇳 ERX-CERNET-BKB219.216.128.0/24 | ||||||
| NS | dns2.dnui.edu.cn | ||||||
| A | 219.216.128.6🇨🇳 ERX-CERNET-BKB219.216.128.0/24 | ||||||
| MX | mta.dnui.edu.cn ⭐ | ||||||
| A | 219.216.131.109🇨🇳 ERX-CERNET-BKB219.216.128.0/19 | ||||||
| PTR | mta.dnui.edu.cn | ||||||
| TXT | v=spf1 ip4:219.216.128.19 ip4:219.216.132.0/24 -all | ||||||
| TXT | mailru-verification: 246b0236dff7ae2d | ||||||
| SOA | authoritative-dns01admin@dnui.edu.cn serial=109 | ||||||
edu.cn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | dns2.edu.cn ⭐ | ||||||
| NS | dns.edu.cn | ||||||
| NS | dns3.edu.cn | ||||||
| NS | ns2.cernet.net | ||||||
| NS | ns4.cernet.net | ||||||
| NS | ns5.cernet.net | ||||||
| SOA | dns.edu.cnhostmaster@net.edu.cn 2026-04-09 #82 | ||||||
Subdomains
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSauthoritative-dns012026-03-28 → 2026-04-12 · 2 obs
● 2026-03-28 09:41:24
● 2026-04-12 08:32:24
● 2026-04-12 08:32:24
●NSdns1.dnui.edu.cn2026-03-28 → 2026-04-12 · 2 obs
● 2026-03-28 09:41:24
● 2026-04-12 08:32:24
● 2026-04-12 08:32:24
●NSdns2.dnui.edu.cn2026-03-28 → 2026-04-12 · 2 obs
● 2026-03-28 09:41:24
● 2026-04-12 08:32:24
● 2026-04-12 08:32:24
●MXmta.dnui.edu.cn2026-03-28 → 2026-04-12 · 2 obs
● 2026-03-28 09:41:24
● 2026-04-12 08:32:24
● 2026-04-12 08:32:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| edu.cn | dns.edu.cn, dns2.edu.cn, dns3.edu.cn | - |
| dnui.edu.cn | dns1.dnui.edu.cn, dns2.dnui.edu.cn | 2 records |
✅ Authoritative Response
Server:219.216.128.5
NS records: dns1.dnui.edu.cn, dns2.dnui.edu.cn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for edu.cn (unsigned zone)
⏱️ Timing
Total: 747ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | dns1.dnui.edu.cn, dns2.dnui.edu.cn |
| MX | 1 | mta.dnui.edu.cn (pri: 10) |
| TXT | 2 | v=spf1 ip4:219.216.128.19 ip4:219.216.13, mailru-verification: 246b0236dff7ae2d |
| SOA | 1 | authoritative-dns01 admin.dnui.edu.cn |
📌 Glue Records Collected
Total: 2
In-bailiwick: 2 (dns2.dnui.edu.cn, dns1.dnui.edu.cn)
Analysis
Hierarchy
dnui.edu.cn is a parent of dns2.dnui.edu.cn, dns1.dnui.edu.cn and mta.dnui.edu.cn.
Name Servers
dnui.edu.cn is delegated to three name servers: authoritative-dns01, dns1.dnui.edu.cn and dns2.dnui.edu.cn.
Host names with a single IP address: dns1.dnui.edu.cn points to 219.216.128.5; dns2.dnui.edu.cn points to 219.216.128.6.
Mail Servers
A single mail server handles dnui.edu.cn, mta.dnui.edu.cn.
Host name mta.dnui.edu.cn resolves to a single IP: 219.216.131.109.