lsdc.ac.cn - robtex.com
lsdc.ac.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns.lsdc.ac.cn ⭐ | ||||||
| NS | ns3.cstnet.cn | ||||||
| A | 159.226.18.13🇨🇳 CSTNET-AS-AP159.226.0.0/16 CSTNET's IP | ||||||
| NS | ns4.cstnet.cn | ||||||
| A | 159.226.18.14🇨🇳 CSTNET-AS-AP159.226.0.0/16 CSTNET's IP | ||||||
| SOA | ns.lsdc.ac.cnmail@lsdc.ac.cn serial=7 | ||||||
ac.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a.dns.cn ⭐ ⚠️ Not in parent delegation | ||||||
| NS | b.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | c.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | cns.cernet.net ⚠️ Not in parent delegation | ||||||
| NS | d.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | e.dns.cn ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2027282531 | ||||||
Same first word
Similar names
DNS History
3 records (3 active, 0 former)
●NSns.lsdc.ac.cn2026-05-01 → 2026-08-06 · 2 obs
● 2026-05-01 06:08:06
● 2026-08-06 21:13:44
● 2026-08-06 21:13:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | b.dns.cn, a.dns.cn, e.dns.cn, c.dns.cn... | - |
| lsdc.ac.cn | ns3.cstnet.cn, ns4.cstnet.cn | - |
✅ Authoritative Response
Server:159.226.18.13
NS records: ns3.cstnet.cn, ns4.cstnet.cn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for lsdc.ac.cn (unsigned zone)
⏱️ Timing
Total: 1483ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | ns4.cstnet.cn, ns3.cstnet.cn |
| SOA | 1 | ns.lsdc.ac.cn mail.lsdc.ac.cn |
Analysis
Name Servers
Three name servers are authoritative for lsdc.ac.cn: ns3.cstnet.cn, ns4.cstnet.cn and ns.lsdc.ac.cn.
lsdc.ac.cn has at least partial name server overlap with other domains, such as cashq.ac.cn, sinap.ac.cn, ivpp.ac.cn and two others.
ns1.xgslb.net, ns.sdb.ac.cn and ns.kepu.com.cn — plus 4 other name servers — are commonly paired with these name servers.
ns3.cstnet.cn directs to 159.226.18.13 and ns4.cstnet.cn directs to 159.226.18.14; each host name points to exactly one IP number.