caskm.edu.cn - robtex.com
caskm.edu.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 42.247.107.118🇨🇳 ERX-CERNET-BKB42.246.0.0/15 CERNET | ||||||
| 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 | ||||||
| PTR | ns1.service.edu.cn | ||||||
| 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) | ||||||
| PTR | ns2.service.edu.cn | ||||||
| MX | mxbiz1.qq.com ⭐ | ||||||
| MX | mxbiz2.qq.com(10) | ||||||
| SOA | ns1.service.edu.cnserv@cernet.com serial=2797651276 | ||||||
edu.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | dns2.edu.cn ⭐ | ||||||
| NS | dns.edu.cn | ||||||
| NS | dns3.edu.cn | ||||||
| NS | ns2.cernet.net ⚠️ Not in parent delegation | ||||||
| NS | ns4.cernet.net ⚠️ Not in parent delegation | ||||||
| NS | ns5.cernet.net ⚠️ Not in parent delegation | ||||||
| SOA | dns.edu.cnhostmaster@net.edu.cn 2026-05-08 #25 | ||||||
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.service.edu.cn2026-05-09 → 2026-05-11 · 2 obs
● 2026-05-11 23:09:56
●NSns2.service.edu.cn2026-05-09 → 2026-05-11 · 2 obs
● 2026-05-11 23:09:56
●A42.247.107.1182026-05-09 → 2026-05-11 · 2 obs
● 2026-05-11 23:09:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, e.dns.cn, b.dns.cn, d.dns.cn... | - |
| edu.cn | dns.edu.cn, ns2.cernet.net, ns4.cernet.net, ns5.cernet.net... | 6 records |
| caskm.edu.cn | ns2.service.edu.cn, ns1.service.edu.cn | 4 records |
✅ Authoritative Response
Server:202.112.5.49
NS records: ns2.service.edu.cn, ns1.service.edu.cn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for caskm.edu.cn (unsigned zone)
⏱️ Timing
Total: 2152ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 42.247.107.118 |
| NS | 2 | ns1.service.edu.cn, ns2.service.edu.cn |
| MX | 2 | mxbiz1.qq.com (pri: 5), mxbiz2.qq.com (pri: 10) |
| SOA | 1 | ns1.service.edu.cn serv.cernet.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
IP Addresses
caskm.edu.cn maps to IP address 42.247.107.118.
Name Servers
Two name servers ns1.service.edu.cn and ns2.service.edu.cn are delegated to caskm.edu.cn.
caskm.edu.cn uses the same name server configuration as other domains, such as tttc.edu.cn, brs.edu.cn, hrbiit.edu.cn, nnvtu.edu.cn and yjpt.edu.cn.
caskm.edu.cn shares name servers with other domains at least partially, for instance gxcme.edu.cn and lzatc.edu.cn.
Host names with two IPs:
ns1.service.edu.cn points to 2001:da8:257:2222::8888 and 202.112.5.49.
ns2.service.edu.cn points to 2001:da8:257:1111::8888 and 202.112.4.49.
Mail Servers
Two mail servers handle caskm.edu.cn: mxbiz1.qq.com and mxbiz2.qq.com.
caskm.edu.cn shares the same mail server setup as other domains, including diyiqifu.com, kingtechina.com, cpcg.net.cn, tripruisu.com and lisscn.com.
caskm.edu.cn shares mail servers with other domains at least in part, for instance budaixi.com.cn, ruidakeji.com, wzf9587.top, yiksan.com and ruthout.com.