cfh.ac.cn - robtex.com
cfh.ac.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 159.226.89.126🇨🇳 CSTNET-AS-AP159.226.89.0/24 | ||||||
| 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) | ||||||
| SOA | ns1.sfn.cnroot@ns1.sfn.cn 2026-08-06 #0 | ||||||
ac.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a.dns.cn ⭐ ⚠️ Not in parent delegation | ||||||
| NS | b.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | c.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | cns.cernet.net ⚠️ Not in parent delegation | ||||||
| NS | d.dns.cn ⚠️ Not in parent delegation | ||||||
| NS | e.dns.cn ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2027282492 | ||||||
Same first word
Similar names
DNS History
5 records (3 active, 2 former)
●NSns1.sfn.cn2015-11-28 → 2026-08-05 · 3 obs
○ 2015-07-26 05:14:56
● 2015-11-28 14:16:18
● 2026-08-05 18:22:54
● 2015-11-28 14:16:18
● 2026-08-05 18:22:54
●NSns2.sfn.cn2015-11-28 → 2026-08-05 · 3 obs
○ 2015-07-26 05:14:56
● 2015-11-28 14:16:18
● 2026-08-05 18:22:54
● 2015-11-28 14:16:18
● 2026-08-05 18:22:54
○NSns3.sanfront.com.cn2015-07-26 → 2015-07-26 · 3 obs
● 2015-07-26 05:14:56
○ 2015-11-28 14:16:18
○ 2026-08-05 18:22:54
○ 2015-11-28 14:16:18
○ 2026-08-05 18:22:54
○NSns5.sanfront.com.cn2015-07-26 → 2015-07-26 · 3 obs
● 2015-07-26 05:14:56
○ 2015-11-28 14:16:18
○ 2026-08-05 18:22:54
○ 2015-11-28 14:16:18
○ 2026-08-05 18:22:54
●A159.226.89.1262015-07-26 → 2026-08-05 · 2 obs
● 2015-07-26 05:14:56
● 2026-08-05 18:22:54
● 2026-08-05 18:22:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, d.dns.cn, c.dns.cn, b.dns.cn... | - |
| cfh.ac.cn | ns1.sfn.cn, ns2.sfn.cn | - |
✅ Authoritative Response
Server:111.63.77.29
NS records: ns1.sfn.cn, ns2.sfn.cn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cfh.ac.cn (unsigned zone)
⏱️ Timing
Total: 5011ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 159.226.89.126 |
| NS | 2 | ns2.sfn.cn, ns1.sfn.cn |
| SOA | 1 | ns1.sfn.cn root.ns1.sfn.cn |
Analysis
IP Addresses
cfh.ac.cn resolves to just one IP address, 159.226.89.126.
Name Servers
Two name servers handle the delegation for cfh.ac.cn: ns1.sfn.cn and ns2.sfn.cn.
cfh.ac.cn shares its NS records with other domains, for example biophysics-reports.org, bch.com.cn, trcw.ac.cn and two others.
cfh.ac.cn and other domains like qzlib.com.cn, bozhou.cn and tobaccoinfo.com.cn share some name servers
Host names that have two IP addresses:
ns2.sfn.cn resolves to two addresses: 101.37.119.99 and 111.63.77.30.
Host names that point to one IP address:
The hostname ns1.sfn.cn resolves to 111.63.77.29.