mail.cfbrain.cn - robtex.com
mail.cfbrain.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 202.91.240.165🇨🇳 CHINANET-BACKBONE202.91.240.0/21 China Telecom Network | ||||||
cfbrain.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 202.91.240.162🇨🇳 CHINANET-BACKBONE202.91.240.0/21 China Telecom Network | ||||||
| NS | dns27.hichina.com ⭐ | ||||||
| NS | dns28.hichina.com | ||||||
| MX | mail.cfbrain.cn ⭐ | ||||||
| TXT | v=spf1 mx:mail.cfbrain.com.cn ip4:202.91.240.162 -all | ||||||
| SOA | dns27.hichina.comhostmaster@hichina.com 2026-01-12 #9 | ||||||
MX for
Same first word
Similar names
DNS History
1 record (1 active, 0 former)
●A202.91.240.1652026-07-09 → 2026-07-28 · 2 obs
● 2026-07-09 14:29:18
● 2026-07-28 21:32:22
● 2026-07-28 21:32:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| cfbrain.cn | dns27.hichina.com, dns28.hichina.com | - |
✅ Authoritative Response
Server:139.224.142.107
NS records: dns27.hichina.com, dns28.hichina.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cfbrain.cn (unsigned zone)
⏱️ Timing
Total: 1686ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 202.91.240.165 |
Analysis
Mail Server Role
cfbrain.cn uses mail.cfbrain.cn as a mail server.
IP Addresses
mail.cfbrain.cn resolves to one IP address: 202.91.240.165.
mail.cfbrain.com.cn is an example of another host name that shares IP numbers with mail.cfbrain.cn.