CF1762363063174-tsm20251105083916

WWW.RTSAK.COM - mail.s4l.cz

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mail.s4l.cz checked at 2025-11-05T17:17:43.158Z 420ms 25/25/25 100% R:16

mail.s4l.cz

A81.91.87.10🇨🇿 WEB4U
PTRmail.web4u.cz

s4l.cz

NSns2.web4u.cz
NSns.web4u.cz
MXmx1.mailchannels.net
MXmx2.mailchannels.net
A81.91.86.12🇨🇿 WEB4U

Starts with same word

Starts similarily

AI analysis

mail.s4l.cz points to a single IP number: 81.91.87.10.

Other host names, for instance mail.extima.eu, mail.biomasstechnology.eu, mail.czech-spa.net, mail.donnareality.cz and mail.ingersoll.cz share IP numbers with mail.s4l.cz.

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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