u121.cn - robtex.com
u121.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 177.211.157.51🇧🇷 UNSPECIFIED160.0.0.0/3 | ||||||
| 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=1774606953 | ||||||
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=2034666695 | ||||||
Same first word
Similar names
DNS History
5 records (3 active, 2 former)
●NSdm1.longmingdns.com2026-04-02 → 2026-04-13 · 3 obs
○ 2019-12-28 12:27:16
● 2026-04-02 00:48:56
● 2026-04-13 16:05:58
● 2026-04-02 00:48:56
● 2026-04-13 16:05:58
●NSdm2.longmingdns.com2026-04-02 → 2026-04-13 · 3 obs
○ 2019-12-28 12:27:16
● 2026-04-02 00:48:56
● 2026-04-13 16:05:58
● 2026-04-02 00:48:56
● 2026-04-13 16:05:58
○NSns1.dnsnw.com2019-12-28 → 2019-12-28 · 3 obs
● 2019-12-28 12:27:16
○ 2026-04-02 00:48:56
○ 2026-04-13 16:05:58
○ 2026-04-02 00:48:56
○ 2026-04-13 16:05:58
○A156.250.68.1062019-12-28 → 2019-12-28 · 3 obs
● 2019-12-28 12:27:16
○ 2026-04-02 00:48:56
○ 2026-04-13 16:05:58
○ 2026-04-02 00:48:56
○ 2026-04-13 16:05:58
●A177.211.157.512026-04-02 → 2026-04-13 · 3 obs
○ 2019-12-28 12:27:16
● 2026-04-02 00:48:56
● 2026-04-13 16:05:58
● 2026-04-02 00:48:56
● 2026-04-13 16:05:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| u121.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 u121.cn (unsigned zone)
⏱️ Timing
Total: 4547ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 177.211.157.51 |
| NS | 2 | dm1.longmingdns.com, dm2.longmingdns.com |
| SOA | 1 | dm1.longmingdns.com dnsadmin.longmingdns |
Analysis
IP Addresses
u121.cn resolves to one IP number: 177.211.157.51.
Name Servers
u121.cn is delegated to two name servers dm1.longmingdns.com and dm2.longmingdns.com.
u121.cn shares the same name server setup as other domains, for instance 852z.cn, c5wg6.cn, pwof.cn, zx8848.cn and wlzlz.com.
Two IP numbers for a host: dm2.longmingdns.com points to 183.253.57.197 and 211.99.99.56.
One IP number for a host: dm1.longmingdns.com points to 218.98.111.163.