`mx1.21cn.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.com`hostmaster@hichina.com 2026-06-04 #12

WOT: SAFE (53/100)
rank #10830 globally
rank #5281 in the tld
WOT: SUSPICIOUS (52/100)
📈 Tranco rank: #9,782

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DNS History

1 record (1 active, 0 former)

●MXmta-ent.21cn.com2017-09-10 → 2026-07-17 · 2 obs

● 2017-09-10 21:01:20
● 2026-07-17 03:37:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
21cn.com	vip3.alidns.com, vip4.alidns.com	22 records

✅ Authoritative Response

Server:121.40.6.163

NS records: vip3.alidns.com, vip4.alidns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21cn.com (unsigned zone)

⏱️ Timing

Total: 3327ms | 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

mx1.21cn.com uses one mail server — mta-ent.21cn.com.

The mail server setup of mx1.21cn.com matches that of other domains such as amcongen.guangzhou.gd.cn, rss.21cn.com, mail1.21cn.com and two others.

At least some of the mail servers used by mx1.21cn.com are shared with other domains: ldbpack.com, wintech-t.com, hy-bulb.com and two others among them.

These mail servers tend to be used in conjunction with the mail servers mailcdn.21cn.com.

mta-ent.21cn.com carries two IP numbers: 183.56.203.132 and 183.56.205.179.

mx1.21cn.com - robtex.com

mx1.21cn.com

21cn.com