mail4.21cn.com - robtex.com
mail4.21cn.com
| DNSSEC | ⚠️ Not signed | ||||||
| MX | mta-ent.21cn.com ⭐ | ||||||
| A | 183.56.203.132🇨🇳 CHINANET-Guangdong-GuangZhouNanFangJiDiWang-IDC183.56.192.0/20 CloudVsp.Inc-HYC-double - GZNFJDW Network unicast | ||||||
| A | 183.56.205.179🇨🇳 CHINANET-Guangdong-GuangZhouNanFangJiDiWang-IDC183.56.192.0/20 CloudVsp.Inc-HYC-double - GZNFJDW Network unicast | ||||||
21cn.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 240e:980:8100::72d9:250d🇨🇳 CHINANET-BACKBONE240e::/20 CHINANET-IPv6-ROUTE | ||||||
| A | 114.217.37.13🇨🇳 CHINANET-BACKBONE114.216.0.0/13 China Telecom Network | ||||||
| NS | vip3.alidns.com ⭐ | ||||||
| NS | vip4.alidns.com | ||||||
| MX | mta.21cn.com ⭐ | ||||||
| TXT | v=spf1 include:mail-spf.21cn.com include:mail01-spf.21cn.com include:mail02-s... | ||||||
| SOA | vip3.alidns.comhostmaster@hichina.com 2025-12-11 #12 | ||||||
rank #10848 globally
rank #5334 in the tld
WOT: SUSPICIOUS (52/100)
📈 Tranco rank: #8,521
Same first word
mail4.gov.ao |
mail4.net |
mail4.pro |
mail4.info |
mail4.us |
mail4.at |
mail4.uk |
mail4.kinghost.net |
mail4.org |
mail4.dk |
mail4.pl |
mail4.nhs.uk |
mail4.io |
mail4.de |
mail4.mil.ru |
mail4.ru |
mail4.in |
mail4.co |
mail4.com |
mail4.it |
Similar names
DNS History
1 record (1 active, 0 former)
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| 21cn.com | vip3.alidns.com, vip4.alidns.com | 22 records |
✅ Authoritative Response
Server:121.40.6.164
NS records: vip3.alidns.com, vip4.alidns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21cn.com (unsigned zone)
⏱️ Timing
Total: 3385ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| MX | 1 | mta-ent.21cn.com (pri: 10) |
📌 Glue Records Collected
Total: 22
Out-of-bailiwick: 22 (vip3.alidns.com, vip3.alidns.com, vip3.alidns.com...)
Analysis
Mail Servers
mail4.21cn.com is handled by a single mail server, mta-ent.21cn.com.
The mail server setup for mail4.21cn.com matches that of other domains, for instance max1-2.guangzhou.gd.cn, public.szptt.net.cn, mail7.21cn.com, gdjyedu.net and 189.netdisk.21cn.com.
mail4.21cn.com shares at least partially some mail servers with other domains, including pub.dgnet.gd.cn, cnnbyn.com, evtevision.net, alplub.com and apt-tooling.com.
these mail servers are commonly used together with mailcdn.21cn.com.
mta-ent.21cn.com points to two IPs: 183.56.203.132 and 183.56.205.179.