CF1763608377002-tsm20251116095642

WWW.RTSAK.COM - 21.75.42.100.in-addr.arpa

Search for IP or hostnames:

21.75.42.100.in-addr.arpa checked at 2025-11-20T03:12:56.990Z 96ms 47/47/47 100% R:12 allDone:true timedOut:false

21.75.42.100.in-addr.arpa

MXlocalhost
A127.0.0.1
PTRlocalhost
PTRundefined.hostname.localhost
A127.0.0.1
PTRlocalhost
A::1
PTRlocalhost
A127.0.0.1
PTRlocalhost

75.42.100.in-addr.arpa

NSns1.multacom.com
NSns2.multacom.com

Starts with same word

Starts similarily

AI analysis

21.75.42.100.in-addr.arpa resolves to two IP numbers: ::1 and 127.0.0.1.

Other host names, for instance inovum.com, windowz.net, mail.angelverein.at, mail.24-gastro.de and kletterhelm.ch share IP numbers with 21.75.42.100.in-addr.arpa.

21.75.42.100.in-addr.arpa is handled by a single mail server, localhost.

21.75.42.100.in-addr.arpa shares the mail server setup with other domains, for example db11-eu-hz1.k5.io, wwwsurfer.de, ovulate.org, yros.com and www.hunleymediagroup.com.

Host name localhost points to IP 127.0.0.1.

Host name undefined.hostname.localhost points to IP 127.0.0.1.

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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