vmd.edu.cn - robtex.com
vmd.edu.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.service.edu.cn ⭐ | ||||||
| A | 2001:da8:257:2222::8888🇨🇳 ERX-CERNET-BKB2001:da8:257::/48 | ||||||
| A | 202.112.5.49🇨🇳 ERX-CERNET-BKB202.112.0.0/16 | ||||||
| NS | ns2.service.edu.cn | ||||||
| A | 2001:da8:257:1111::8888🇨🇳 ERX-CERNET-BKB2001:da8:257::/48 | ||||||
| A | 202.112.4.49🇨🇳 CNGI-BJ-IX2-AS-AP202.112.4.0/24 CMI (Customer Route) | ||||||
| SOA | ns1.service.edu.cnfreshseven@163.com serial=3038345010 | ||||||
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 2026-07-16 #79 | ||||||
Same first word
Similar names
DNS History
2 records (2 active, 0 former)
●NSns1.service.edu.cn2026-05-20 → 2026-07-19 · 2 obs
● 2026-07-19 18:25:14
●NSns2.service.edu.cn2026-05-20 → 2026-07-19 · 2 obs
● 2026-07-19 18:25:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| edu.cn | dns.edu.cn, ns2.cernet.net, ns4.cernet.net, ns5.cernet.net... | 6 records |
| vmd.edu.cn | ns2.service.edu.cn, ns1.service.edu.cn | 4 records |
✅ Authoritative Response
Server:202.112.4.49
NS records: ns2.service.edu.cn, ns1.service.edu.cn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for vmd.edu.cn (unsigned zone)
⏱️ Timing
Total: 3146ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | ns1.service.edu.cn, ns2.service.edu.cn |
| SOA | 1 | ns1.service.edu.cn freshseven.163.com |
📌 Glue Records Collected
Total: 10
In-bailiwick: 6 (dns.edu.cn, dns.edu.cn, dns2.edu.cn...)
Out-of-bailiwick: 4 (ns2.service.edu.cn, ns1.service.edu.cn, ns2.service.edu.cn...)
Analysis
Name Servers
The NS records for vmd.edu.cn delegate to ns1.service.edu.cn and ns2.service.edu.cn.
vmd.edu.cn shares its NS records with other domains, for example ncet.edu.cn, jxxdxy.edu.cn, lfhvc.edu.cn and two others.
vmd.edu.cn and other domains like tccu.edu.cn, pyvtc.edu.cn and syuct.edu.cn share some name servers
ns1.service.edu.cn resolves to 202.112.5.49 and 2001:da8:257:2222::8888. Likewise, ns2.service.edu.cn resolves to 202.112.4.49 and 2001:da8:257:1111::8888 — two IP addresses apiece.