sm21.cn - robtex.com
sm21.cn
| CNAME | sm21.cn.w.kunlunaq.com | ||||||
| DNSSEC | ⚠️ Not signed | ||||||
| A | 116.178.132.99🇨🇳 CHINA169-Backbone116.178.0.0/16 route of Chinaunicom | ||||||
| A | 116.178.132.100🇨🇳 CHINA169-Backbone116.178.0.0/16 route of Chinaunicom | ||||||
| A | 116.178.132.101🇨🇳 CHINA169-Backbone116.178.0.0/16 route of Chinaunicom | ||||||
| A | 116.178.132.102🇨🇳 CHINA169-Backbone116.178.0.0/16 route of Chinaunicom | ||||||
| A | 116.178.132.103🇨🇳 CHINA169-Backbone116.178.0.0/16 route of Chinaunicom | ||||||
| A | 116.178.132.104🇨🇳 CHINA169-Backbone116.178.0.0/16 route of Chinaunicom | ||||||
| A | 116.178.132.105🇨🇳 CHINA169-Backbone116.178.0.0/16 route of Chinaunicom | ||||||
| A | 116.178.132.106🇨🇳 CHINA169-Backbone116.178.0.0/16 route of Chinaunicom | ||||||
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=2035075040 | ||||||
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSdns7.hichina.com2026-05-22 → 2026-07-22 · 2 obs
● 2026-05-22 20:20:26
● 2026-07-22 13:40:14
● 2026-07-22 13:40:14
●NSdns8.hichina.com2026-05-22 → 2026-07-22 · 2 obs
● 2026-05-22 20:20:26
● 2026-07-22 13:40:14
● 2026-07-22 13:40:14
●MXmxn.mxhichina.com2026-05-22 → 2026-07-22 · 2 obs
● 2026-05-22 20:20:26
● 2026-07-22 13:40:14
● 2026-07-22 13:40:14
●MXmxw.mxhichina.com2026-05-22 → 2026-07-22 · 2 obs
● 2026-05-22 20:20:26
● 2026-07-22 13:40:14
● 2026-07-22 13:40:14
●CNAMEsm21.cn.w.kunlunaq.com2026-05-22 → 2026-07-22 · 2 obs
● 2026-05-22 20:20:26
● 2026-07-22 13:40:14
● 2026-07-22 13:40:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| sm21.cn | dns7.hichina.com, dns8.hichina.com | - |
✅ Authoritative Response
Server:2408:4009:501::16
NS records: dns7.hichina.com, dns8.hichina.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sm21.cn (unsigned zone)
⏱️ Timing
Total: 3818ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | dns8.hichina.com, dns7.hichina.com |
| MX | 2 | mxw.mxhichina.com (pri: 10), mxn.mxhichina.com (pri: 5) |
| TXT | 1 | v=spf1 include:spf.mxhichina.com -all |
| CNAME | 1 | sm21.cn.w.kunlunaq.com |
| SOA | 1 | dns7.hichina.com hostmaster.hichina.com |
Analysis
IP Addresses
sm21.cn resolves to 8 IP numbers: 116.178.132.99, 116.178.132.100, 116.178.132.101 and 5 other.
Additional host names — yuxing-sh.com.w.kunlunaq.com, 6a6a672f-67e8213b-268edbb2-759f-2d62.trace.codingsky.net.t.kunlunpi.com, www.ruideppt.com.w.kunlunaq.com and two others — share IP numbers with sm21.cn.