cstu.org.cn - robtex.com
cstu.org.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 140.188.48.105🇺🇸 AS398823140.188.32.0/19 PEG TECH INC | ||||||
| NS | dm1.longmingdns.com ⭐ | ||||||
| A | 218.98.111.163🇩🇪 HKCICL-AS-AP218.98.111.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED | ||||||
| NS | dm2.longmingdns.com | ||||||
| A | 183.253.57.197🇨🇳 CHINAMOBILE-CN183.253.0.0/16 CMI (Customer Route) | ||||||
| A | 211.99.99.56🇨🇳 DONGGUAN-1211.99.99.0/24 Proxy-registered route object | ||||||
| SOA | dm1.longmingdns.comdnsadmin@longmingdns.com serial=1763473935 | ||||||
org.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=2027874779 | ||||||
Same first word
Similar names
DNS History
10 records (3 active, 7 former)
●NSdm1.longmingdns.com2026-07-01 → 2026-07-05 · 3 obs
● 2026-07-01 10:53:00
● 2026-07-05 01:24:06
●NSdm2.longmingdns.com2026-07-01 → 2026-07-05 · 3 obs
● 2026-07-01 10:53:00
● 2026-07-05 01:24:06
○NSf1g1ns1.dnspod.net2015-08-05 → 2016-02-24 · 4 obs
● 2016-02-24 16:59:54
○ 2021-06-26 04:14:28
○ 2026-07-05 01:24:06
○NSf1g1ns2.dnspod.net2015-08-05 → 2016-02-24 · 4 obs
● 2016-02-24 16:59:54
○ 2021-06-26 04:14:28
○ 2026-07-05 01:24:06
○A121.42.118.822015-08-05 → 2015-08-05 · 3 obs
○ 2015-11-28 18:54:46
○ 2026-07-05 01:24:06
●A140.188.48.1052026-07-01 → 2026-07-05 · 3 obs
● 2026-07-01 10:53:00
● 2026-07-05 01:24:06
○A23.27.192.1152016-05-09 → 2016-05-09 · 4 obs
● 2016-05-09 19:03:18
○ 2017-02-01 20:16:54
○ 2026-07-05 01:24:06
○A45.35.36.682016-02-24 → 2016-02-24 · 4 obs
● 2016-02-24 16:59:54
○ 2016-05-09 19:03:18
○ 2026-07-05 01:24:06
○A47.89.27.1592015-11-28 → 2015-11-28 · 4 obs
● 2015-11-28 18:54:46
○ 2016-02-24 16:59:54
○ 2026-07-05 01:24:06
○A52.69.166.2312017-02-01 → 2017-02-01 · 4 obs
● 2017-02-01 20:16:54
○ 2021-06-26 04:14:28
○ 2026-07-05 01:24:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | c.dns.cn, b.dns.cn, a.dns.cn, e.dns.cn... | - |
| cstu.org.cn | dm1.longmingdns.com, dm2.longmingdns.com | - |
✅ Authoritative Response
Server:211.99.99.56
NS records: dm1.longmingdns.com, dm2.longmingdns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cstu.org.cn (unsigned zone)
⏱️ Timing
Total: 1626ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 140.188.48.105 |
| NS | 2 | dm1.longmingdns.com, dm2.longmingdns.com |
| SOA | 1 | dm1.longmingdns.com dnsadmin.longmingdns |
Analysis
IP Addresses
cstu.org.cn resolves to one IP address: 140.188.48.105.
Further host names like ytwfg.com and xinhebox.cn overlap in IP numbers with cstu.org.cn.
Name Servers
cstu.org.cn uses two name servers for its delegation: dm1.longmingdns.com and dm2.longmingdns.com.
cstu.org.cn uses the same name servers as several other domains — among them blln.cn, gopep.com.cn, synubbs.com.cn and two more.
Hostnames that resolve to two IP addresses:
dm2.longmingdns.com directs traffic to 183.253.57.197 and 211.99.99.56.
Hosts with just one IP address:
dm1.longmingdns.com has the IP address 218.98.111.163.