`zhangs.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 2026-01-07 #16

WOT: SAFE (53/100)
rank #10874 globally
rank #5322 in the tld
WOT: SUSPICIOUS (52/100)
📈 Tranco rank: #8,584

Same first word

zhangs.com.cn

zhangs.me

zhangs.dk

Similar names

gzhans.net

shganz.com

sgzhan.com

zgansh.com

gznash.com

zahgns.cn

DNS History

1 record (1 active, 0 former)

●MXmta-ent.21cn.com2015-06-25 → 2026-05-11 · 2 obs

● 2015-06-25 12:49:38
● 2026-05-11 10:25:58

🔍 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:121.40.6.163

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 798ms | 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

zhangs.21cn.com is handled by a single mail server, mta-ent.21cn.com.

zhangs.21cn.com shares the same mail server setup as other domains, including training.21cn.com, kldic.com, match.shantou.gd.cn, liweizx.com and gzgavin.com.

zhangs.21cn.com shares mail servers with other domains at least in part, for instance yondee.com, szchenjin.com, szptt.net.cn, longdeit.com and acceds-cookware.com.

These mail servers are commonly used together with mailcdn.21cn.com and mail.yondee.com.

Host name mta-ent.21cn.com points to IPs 183.56.203.132 and 183.56.205.179.

zhangs.21cn.com - robtex.com

zhangs.21cn.com

21cn.com