CF1763637114149-tsm20251116095642

MXLIST.NET - builder.cz

Search for IP or hostnames:

builder.cz checked at 2025-11-20T11:11:54.022Z 1282ms 68/68/68 100% R:12 allDone:true timedOut:false

builder.cz

MXmail.builder.cz
A81.91.84.134🇨🇿 WEB4U
PTRm105.server4u.cz
NSns2.web4u.cz
A2a02:a40:100:28ff::12 🇨🇿 Radiokomunikace
PTRns2.web4u.cz
A85.207.53.12🇨🇿 Radiokomunikace
PTRns2.web4u.cz
NSns.web4u.cz
A2001:1568:fd::241 🇨🇿 WEB4U
PTRns.web4u.cz
A185.14.224.241🇨🇿 WEB4U
PTRns.web4u.cz
A81.91.84.189🇨🇿 WEB4U
PTRwm103.web-media.cz

cz

NSa.ns.nic.cz
NSb.ns.nic.cz
NSc.ns.nic.cz
NSd.ns.nic.cz

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Starts with same word

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AI analysis

The parent of mail.builder.cz is builder.cz.

builder.cz points to a single IP number: 81.91.84.189.

Other host names, for instance arten.cz, grafika.cz, mail.osapo.com, aliaz.cz and wm103.web-media.cz share IP numbers with builder.cz.

builder.cz is delegated to two name servers: ns2.web4u.cz and ns.web4u.cz.

builder.cz uses the same name server setup as other domains, for instance ikite.cz, moluft.com, votice.eu, eumedical.eu and sckolin.cz.

Host names with two IP numbers:

The host ns2.web4u.cz points to 2a02:a40:100:28ff::12 and 85.207.53.12.

The host ns.web4u.cz points to 2001:1568:fd::241 and 185.14.224.241.

The mail server for builder.cz is mail.builder.cz.

Host name mail.builder.cz resolves to IP 81.91.84.134.

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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