CF1761429901687-tsm20251024211356

WWW.RTSAK.COM - learning.21cn.com

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learning.21cn.com checked at 2025-10-25T22:05:01.675Z 262ms 43/43/43 100% R:16

learning.21cn.com

MXmta-ent.21cn.com
A183.56.203.132🇨🇳 CHINANET-Guangzhou-Southbase-IDC
A183.56.205.179🇨🇳 CHINANET-Guangzhou-Southbase-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

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

learning.21cn.com uses the same mail server configuration as other domains, such as anest-iwata-dg.com, stock1.21cn.com, vhost.szptt.net.cn, max2-5.guangzhou.gd.cn and preview.21cn.com.

learning.21cn.com shares mail servers with other domains at least in part, for instance duwis.com, gz-eport.com, cgsofa.com, camry.com.cn and soweier.com.

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

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

Perform reverse DNS lookup as well as normal forward DNS. Check Autonomous System Numbers (ASNs) and BGP connections between Internet Service Providers.
dbq

cdOUvdN CF johedugfp 2025-10-25