ioe.ac.cn - robtex.com
ioe.ac.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 | mx.cstnet.cn ⭐ | ||||||
| A | 159.226.251.12🇨🇳 CSTNET-AS-AP159.226.0.0/16 CSTNET's IP | ||||||
| PTR | mx.cstnet.cn | ||||||
| TXT | v=spf1 include:spf.mail.cstnet.cn -all | ||||||
| SOA | ns1.sfn.cnroot@ns1.sfn.cn 2026-05-09 #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=2027268764 | ||||||
WOT: SAFE (94/100)
Same first word
Similar names
DNS History
5 records (3 active, 2 former)
●NSns1.sfn.cn2015-10-19 → 2026-05-09 · 3 obs
● 2015-10-19 14:08:20
● 2026-05-09 07:30:08
●NSns2.sfn.cn2015-10-19 → 2026-05-09 · 3 obs
● 2015-10-19 14:08:20
● 2026-05-09 07:30:08
○NSns3.sanfront.com.cn2015-07-11 → 2015-09-11 · 4 obs
● 2015-09-11 14:02:58
○ 2015-10-19 14:08:20
○ 2026-05-09 07:30:08
○NSns5.sanfront.com.cn2015-07-11 → 2015-09-11 · 4 obs
● 2015-09-11 14:02:58
○ 2015-10-19 14:08:20
○ 2026-05-09 07:30:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| ioe.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 ioe.ac.cn (unsigned zone)
⏱️ Timing
Total: 4514ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | ns1.sfn.cn, ns2.sfn.cn |
| MX | 1 | mx.cstnet.cn (pri: 5) |
| TXT | 1 | v=spf1 include:spf.mail.cstnet.cn -all |
| SOA | 1 | ns1.sfn.cn root.ns1.sfn.cn |
Analysis
Name Servers
Two name servers ns1.sfn.cn and ns2.sfn.cn handle the delegation for ioe.ac.cn.
ioe.ac.cn shares the same name server setup as other domains, for example moahr.cn, cove.cn, mct.com.cn, labelshop.com.cn and xhrc.com.cn.
ioe.ac.cn partially shares name servers with other domains, for example jiexi.gov.cn and polar.com.cn.
Host names with two IP numbers:
ns2.sfn.cn points to 101.37.119.99 and 111.63.77.30.
Host names with one IP number:
ns1.sfn.cn points to 111.63.77.29.
Mail Servers
The mx.cstnet.cn mail server handles ioe.ac.cn.
ioe.ac.cn shares the same mail server setup as other domains, including gscloud.cn, ia.ac.cn, opt.cn, hf.cas.cn and mail.kib.ac.cn.
ioe.ac.cn shares some mail servers with other domains, for example zknic.cn.
mx.cstnet.cn points to a single IP number: 159.226.251.12.