521dy.cn - robtex.com
521dy.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 177.210.98.104UNSPECIFIED160.0.0.0/3 | ||||||
| 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=1774605354 | ||||||
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=2034771584 | ||||||
Same first word
Similar names
DNS History
10 records (3 active, 7 former)
●NSdm1.longmingdns.com2026-05-09 → 2026-05-09 · 2 obs
○ 2017-05-07 19:40:36
● 2026-05-09 17:19:00
● 2026-05-09 17:19:00
●NSdm2.longmingdns.com2026-05-09 → 2026-05-09 · 2 obs
○ 2017-05-07 19:40:36
● 2026-05-09 17:19:00
● 2026-05-09 17:19:00
○NSdns10.hichina.com2015-08-11 → 2017-02-09 · 4 obs
● 2015-08-11 20:22:28
● 2017-02-09 03:26:08
○ 2017-05-07 19:40:36
○ 2026-05-09 17:19:00
● 2017-02-09 03:26:08
○ 2017-05-07 19:40:36
○ 2026-05-09 17:19:00
○NSdns9.hichina.com2015-08-11 → 2017-02-09 · 4 obs
● 2015-08-11 20:22:28
● 2017-02-09 03:26:08
○ 2017-05-07 19:40:36
○ 2026-05-09 17:19:00
● 2017-02-09 03:26:08
○ 2017-05-07 19:40:36
○ 2026-05-09 17:19:00
○MXmxbiz1.qq.com2016-06-23 → 2017-02-09 · 4 obs
● 2016-06-23 22:13:14
● 2017-02-09 03:26:08
○ 2017-05-07 19:40:36
○ 2026-05-09 17:19:00
● 2017-02-09 03:26:08
○ 2017-05-07 19:40:36
○ 2026-05-09 17:19:00
○MXmxbiz2.qq.com2016-06-23 → 2017-02-09 · 4 obs
● 2016-06-23 22:13:14
● 2017-02-09 03:26:08
○ 2017-05-07 19:40:36
○ 2026-05-09 17:19:00
● 2017-02-09 03:26:08
○ 2017-05-07 19:40:36
○ 2026-05-09 17:19:00
○A119.10.1.2332015-08-11 → 2016-06-23 · 4 obs
● 2015-08-11 20:22:28
● 2016-06-23 22:13:14
○ 2017-02-09 03:26:08
○ 2026-05-09 17:19:00
● 2016-06-23 22:13:14
○ 2017-02-09 03:26:08
○ 2026-05-09 17:19:00
○A119.10.71.1102017-02-09 → 2017-02-09 · 4 obs
○ 2016-06-23 22:13:14
● 2017-02-09 03:26:08
○ 2017-05-07 19:40:36
○ 2026-05-09 17:19:00
● 2017-02-09 03:26:08
○ 2017-05-07 19:40:36
○ 2026-05-09 17:19:00
●A177.210.98.1042026-05-09 → 2026-05-09 · 2 obs
○ 2017-05-07 19:40:36
● 2026-05-09 17:19:00
● 2026-05-09 17:19:00
○A45.194.151.2122026-05-09 → 2026-05-09 · 1 obs
○ 2026-05-09 17:19:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| 521dy.cn | dm1.longmingdns.com, dm2.longmingdns.com | - |
✅ Authoritative Response
Server:183.253.57.197
NS records: dm1.longmingdns.com, dm2.longmingdns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 521dy.cn (unsigned zone)
⏱️ Timing
Total: 4763ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 177.210.98.104 |
| NS | 2 | dm1.longmingdns.com, dm2.longmingdns.com |
| SOA | 1 | dm1.longmingdns.com dnsadmin.longmingdns |
Analysis
IP Addresses
521dy.cn points to IP number 177.210.98.104.
Name Servers
521dy.cn is delegated to two name servers: dm1.longmingdns.com and dm2.longmingdns.com.
521dy.cn uses the same name server setup as other domains such as ynku.cn, 42642.cn, ztbxgg.com, h416.cn and changlingdq.cn.
Host names with two IP numbers:
The host name dm2.longmingdns.com points to 183.253.57.197 and 211.99.99.56.
Host names with one IP number:
The host name dm1.longmingdns.com points to 218.98.111.163.