sinobook.cn - robtex.com
sinobook.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.sfn.cn ⭐ | ||||||
| A | 111.63.77.29🇨🇳 CMNET-V4HEBEI-AS-AP111.63.64.0/20 CMI (Customer Route) | ||||||
| NS | ns2.sfn.cn | ||||||
| A | 101.37.119.99🇨🇳 Alibaba-Cloud101.37.0.0/17 | ||||||
| A | 111.63.77.30🇨🇳 CMNET-V4HEBEI-AS-AP111.63.64.0/20 CMI (Customer Route) | ||||||
| MX | 218.241.235.181 ⭐ | ||||||
| SOA | ns1.sfn.cnroot@ns1.sfn.cn 2026-03-29 #22 | ||||||
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=2034607262 | ||||||
Same first word
Similar names
DNS History
9 records (3 active, 6 former)
○NSn151.ns.yunjiasu.com2015-12-11 → 2015-12-11 · 4 obs
● 2015-12-11 16:53:32
○ 2016-03-24 14:21:44
○ 2026-03-29 17:00:16
○NSn1976.ns.yunjiasu.com2015-12-11 → 2015-12-11 · 4 obs
● 2015-12-11 16:53:32
○ 2016-03-24 14:21:44
○ 2026-03-29 17:00:16
●NSns1.sfn.cn2015-05-19 → 2026-03-29 · 5 obs
● 2015-10-11 17:52:38
○ 2015-12-11 16:53:32
● 2016-03-24 14:21:44
● 2026-03-29 17:00:16
●NSns2.sfn.cn2015-05-19 → 2026-03-29 · 5 obs
● 2015-10-11 17:52:38
○ 2015-12-11 16:53:32
● 2016-03-24 14:21:44
● 2026-03-29 17:00:16
●MX218.241.235.1812015-05-19 → 2026-03-29 · 5 obs
○ 2015-10-11 17:52:38
○ 2017-04-09 23:42:12
● 2026-03-13 14:03:46
● 2026-03-29 17:00:16
○MX218.241.235.1812015-10-11 → 2017-04-09 · 5 obs
● 2015-10-11 17:52:38
● 2017-04-09 23:42:12
○ 2026-03-13 14:03:46
○ 2026-03-29 17:00:16
○A162.159.210.402015-12-11 → 2015-12-11 · 4 obs
● 2015-12-11 16:53:32
○ 2016-03-24 14:21:44
○ 2026-03-29 17:00:16
○A162.159.211.402015-12-11 → 2015-12-11 · 4 obs
● 2015-12-11 16:53:32
○ 2016-03-24 14:21:44
○ 2026-03-29 17:00:16
○A218.241.235.1602015-05-19 → 2017-04-09 · 7 obs
● 2015-10-11 17:52:38
○ 2015-12-11 16:53:32
● 2016-03-24 14:21:44
● 2017-04-09 23:42:12
○ 2026-03-13 14:03:46
○ 2026-03-29 17:00:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| sinobook.cn | ns1.sfn.cn, ns2.sfn.cn | 3 records |
✅ Authoritative Response
Server:101.37.119.99
NS records: ns1.sfn.cn, ns2.sfn.cn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sinobook.cn (unsigned zone)
⏱️ Timing
Total: 998ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | ns2.sfn.cn, ns1.sfn.cn |
| MX | 1 | 218.241.235.181 (pri: 1) |
| SOA | 1 | ns1.sfn.cn root.ns1.sfn.cn |
📌 Glue Records Collected
Total: 3
Out-of-bailiwick: 3 (ns1.sfn.cn, ns2.sfn.cn, ns2.sfn.cn)
Analysis
Name Servers
sinobook.cn is delegated to two name servers ns1.sfn.cn and ns2.sfn.cn.
sinobook.cn shares the same name server setup as other domains, for instance zecom.com.cn, jk.com.cn, especies.ac.cn, audi.com.cn and ingit.com.cn.
sinobook.cn shares at least some name servers with other domains, for example ntt.com.cn, baohua.com.cn and jxsggzy.cn.
Two IP numbers for a host: ns2.sfn.cn points to 101.37.119.99 and 111.63.77.30.
One IP number for a host: ns1.sfn.cn points to 111.63.77.29.
Mail Servers
sinobook.cn is handled by a single mail server, 218.241.235.181.