CF1763898573535-tsm20251123014954

IPLIST.NET - mail.21er.org

Search for IP or hostnames:

mail.21er.org checked at 2025-11-23T11:49:33.504Z 306ms 36/36/36 100% R:17 allDone:true timedOut:false

mail.21er.org

A2a03:4000:36:4d1::1 🇩🇪 netcup-AS
PTRmail.21er.org
A213.109.163.247🇩🇪 netcup-AS
PTRmail.21er.org

21er.org

MXmail.21er.org
NSns1.21er.org
NSns3.21er.org
A2a03:4000:36:4d1::1 🇩🇪 netcup-AS
A213.109.163.247🇩🇪 netcup-AS

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MX for

Starts with same word

Starts similarily

AI analysis

The mail server for 21er.org is mail.21er.org.

mail.21er.org points to two IP numbers: 2a03:4000:36:4d1::1 and 213.109.163.247.

Other host names such as ns1.21er.org, 21er.org and ns2.21er.org share IP numbers with mail.21er.org.

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