mail.sz21.cn - robtex.com

mail.sz21.cn

DNSSEC⚠️ Not signed
A211.147.224.9🇨🇳 CHINANET-Guangdong-GuangZhou-MAN211.147.224.0/20 World Crossing Telecom(GuangZhou) Ltd. -GZMAN-STATIC
PTRmail2249.gzonet.com

sz21.cn

DNSSEC⚠️ Not signed
A27.54.255.200
NSdns7.hichina.com ⭐
NSdns8.hichina.com
MXmail.sz21.cn ⭐
SOAdns7.hichina.comhostmaster@hichina.com 2026-01-12 #9

MX for

sz21.cn

Same first word

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DNS History

1 record (1 active, 0 former)

20162017201820192020202120222023202420252026A211.147.224.9
●A211.147.224.92015-08-14 → 2026-05-14 · 2 obs
● 2015-08-14 04:12:14
● 2026-05-14 09:23:36

🔍 DNS Trace

Analysis

Mail Server Role

mail.sz21.cn functions as a mail server for sz21.cn.

IP Addresses

mail.sz21.cn resolves to one IP number: 211.147.224.9.

other host names including mail.szjywl.com, mail.qes.cn, mail.zhhyt.com, mail.onbed.net and mail.litu.com.cn share IP numbers with mail.sz21.cn.