tea.ac.cn - robtex.com
tea.ac.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 159.226.242.50🇨🇳 CSTNET-AS-AP159.226.242.0/23 | ||||||
| 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 #2 | ||||||
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=2027268743 | ||||||
WOT: SAFE (94/100)
Same first word
Similar names
DNS History
7 records (4 active, 3 former)
●NSns1.sfn.cn2015-11-15 → 2026-05-08 · 3 obs
● 2015-11-15 06:36:26
● 2026-05-08 20:01:38
●NSns2.sfn.cn2015-11-15 → 2026-05-08 · 3 obs
● 2015-11-15 06:36:26
● 2026-05-08 20:01:38
○NSns3.sanfront.com.cn2015-05-29 → 2015-09-17 · 4 obs
● 2015-09-17 10:56:44
○ 2015-11-15 06:36:26
○ 2026-05-08 20:01:38
○NSns5.sanfront.com.cn2015-05-29 → 2015-09-17 · 4 obs
● 2015-09-17 10:56:44
○ 2015-11-15 06:36:26
○ 2026-05-08 20:01:38
●A159.226.242.502026-05-03 → 2026-05-08 · 3 obs
● 2026-05-03 10:55:02
● 2026-05-08 20:01:38
○A159.226.97.842015-05-29 → 2016-12-30 · 4 obs
● 2016-12-30 02:25:08
○ 2026-05-03 10:55:02
○ 2026-05-08 20:01:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| tea.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 tea.ac.cn (unsigned zone)
⏱️ Timing
Total: 2112ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 159.226.242.50 |
| 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
IP Addresses
tea.ac.cn resolves to one IP number: 159.226.242.50.
Other host names, for instance sect.ipc.cas.cn, wetland.ihb.cas.cn, taihu.niglas.cas.cn, nctt.ac.cn and nairc.com share IP numbers with tea.ac.cn.
Name Servers
tea.ac.cn's delegation uses two name servers: ns1.sfn.cn and ns2.sfn.cn.
tea.ac.cn uses the same name server setup as other domains, such as merida.cn, gxwomen.org.cn, chinavocs.org, gamhospital.ac.cn and keeco.com.cn.
tea.ac.cn at least partially shares name servers with other domains, for instance ptm.com.cn, dsp.ac.cn, xjyc.gov.cn and melco.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
A single mail server handles tea.ac.cn, mx.cstnet.cn.
tea.ac.cn shares the same mail server setup as other domains, for instance lamost.org, iccas.ac.cn, ucas.ac.cn, ivpp.ac.cn and yic.ac.cn.
Host name mx.cstnet.cn resolves to a single IP: 159.226.251.12.