CF1764229035522-tsm20251126223807

NSLIST.NET - preview.21cn.com

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preview.21cn.com checked at 2025-11-27T07:37:15.507Z 194ms 46/46/46 100% R:12 allDone:true timedOut:false

preview.21cn.com

MXmta-ent.21cn.com
A183.56.203.132🇨🇳 CHINANET-Guangdong-GuangZhouNanFangJiDiWang-IDC
A183.56.205.179🇨🇳 CHINANET-Guangdong-GuangZhouNanFangJiDiWang-IDC

21cn.com

MXmta.21cn.com
NSvip3.alidns.com
NSvip4.alidns.com
A240e:980:8100::72d9:250d 🇨🇳 CHINA-TELECOM
A114.217.37.13🇨🇳 CHINA-TELECOM
rank #7722 globally
rank #3959 in the tld

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AI analysis

189.preview.21cn.com is a child of preview.21cn.com.

A single mail server handles preview.21cn.com, mta-ent.21cn.com.

preview.21cn.com shares the same mail server setup as other domains, for instance chnky.com, winta.com, nb-wangtao.com, zfkg.com and mediagolf.21cn.com.

preview.21cn.com shares at least some mail servers with other domains, for example hdcopper.com, dgkoc.com, sagamobile.com, getwell.cn and xh-metal.com.

These mail servers are often used together with the mail servers mailcdn.21cn.com.

The host name mta-ent.21cn.com resolves to two IP numbers: 183.56.203.132 and 183.56.205.179.