b20449.cn - robtex.com
b20449.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 156.240.39.245🇭🇰 HKMTC-AS-AP156.240.32.0/20 Hong Kong megalayer | ||||||
| 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=1751342847 | ||||||
cn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.dns.cn ⭐ | ||||||
| NS | b.dns.cn | ||||||
| NS | c.dns.cn | ||||||
| NS | d.dns.cn | ||||||
| NS | e.dns.cn | ||||||
| NS | ns.cernet.net ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2034661533 | ||||||
Same first word
b20449.cn |
DNS History
5 records (3 active, 2 former)
●NSdm1.longmingdns.com2026-03-23 → 2026-04-12 · 2 obs
● 2026-03-23 12:58:12
● 2026-04-12 07:15:52
● 2026-04-12 07:15:52
●NSdm2.longmingdns.com2026-03-23 → 2026-04-12 · 2 obs
● 2026-03-23 12:58:12
● 2026-04-12 07:15:52
● 2026-04-12 07:15:52
●A156.240.39.2452026-03-23 → 2026-04-12 · 2 obs
● 2026-03-23 12:58:12
● 2026-04-12 07:15:52
● 2026-04-12 07:15:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| b20449.cn | dm1.longmingdns.com, dm2.longmingdns.com | - |
✅ Authoritative Response
Server:218.98.111.163
NS records: dm1.longmingdns.com, dm2.longmingdns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for b20449.cn (unsigned zone)
⏱️ Timing
Total: 3894ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 156.240.39.245 |
| NS | 2 | dm1.longmingdns.com, dm2.longmingdns.com |
| SOA | 1 | dm1.longmingdns.com dnsadmin.longmingdns |
Analysis
IP Addresses
b20449.cn points to a single IP address: 156.240.39.245.
Other host names, for instance ay-forge.cn, share IP numbers with b20449.cn.
Name Servers
Two name servers dm1.longmingdns.com and dm2.longmingdns.com handle the delegation for b20449.cn.
b20449.cn shares the same name server setup as other domains, for example ruidejia.cn, cfhgz.cn, wutt.cn, zidonghua001.com and dhlilhy.info.
Host names with two IP numbers:
dm2.longmingdns.com points to 183.253.57.197 and 211.99.99.56.
Host names with one IP number:
dm1.longmingdns.com points to 218.98.111.163.