CF1760420654855-tsm20251012143351

WWW.RTSAK.COM - forum.c4.cz

Search for IP or hostnames:

forum.c4.cz checked at 2025-10-14T05:44:14.836Z 523ms 119/119/119 100% R:15

forum.c4.cz

MXmx.skok.cz
A2001:1528:181::76:183 🇨🇿 Casablanca INT a.s.
PTRmx3.skok.cz
A2001:1528:181::76:244 🇨🇿 Casablanca INT a.s.
PTRmx4.skok.cz
A2001:1528:181::223:67 🇨🇿 Casablanca INT a.s.
PTRmx2.skok.cz
A77.78.76.183🇨🇿 Casablanca INT a.s.
A77.78.76.244🇨🇿 Casablanca INT a.s.
A109.123.223.67🇨🇿 Casablanca INT a.s.
MXmxbackup.skok.cz
A2a01:430:36:1::253:129 🇨🇿 MasterDC
PTRmxbackup.skok.cz
A89.185.253.129🇨🇿 MasterDC
PTRmxbackup.skok.cz
NSns2.skok.cz
A2a01:430:36:1::253:3 🇨🇿 MasterDC
PTRns2.skok.cz
A89.185.253.3🇨🇿 MasterDC
PTRns2.skok.cz
NSns.skok.cz
A2001:1528:181::233:236 🇨🇿 Casablanca INT a.s.
PTRns.skok.cz
A81.0.233.236🇨🇿 Casablanca INT a.s.
NSns3.skokcz.eu
A2001:1528:1:64c0::223:114 🇨🇿 Casablanca INT a.s.
PTRns3.skokcz.eu
A109.123.223.114🇨🇿 Casablanca INT a.s.
A2001:1528:181::223:83 🇨🇿 Casablanca INT a.s.
PTRforum.c4.cz
A109.123.223.83🇨🇿 Casablanca INT a.s.

c4.cz

MXmx.skok.cz
MXmxbackup.skok.cz
NSns2.skok.cz
NSns.skok.cz
NSns3.skokcz.eu
A2001:1528:181::76:186 🇨🇿 Casablanca INT a.s.
A77.78.76.186🇨🇿 Casablanca INT a.s.

PTR for

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AI analysis

forum.c4.cz resolves to two IPs: 2001:1528:181::223:83 and 109.123.223.83.

forum.c4.cz is delegated to three name servers: ns2.skok.cz, ns.skok.cz and ns3.skokcz.eu.

forum.c4.cz at least partially shares name servers with other domains, for instance euro-tech.cz, it-serv.cz, plon.cz, it-care.cz and alidal.cz.

Host names with two IP numbers:

Host ns2.skok.cz points to 2a01:430:36:1::253:3 and 89.185.253.3.

Host ns.skok.cz points to 2001:1528:181::233:236 and 81.0.233.236.

Host ns3.skokcz.eu points to 2001:1528:1:64c0::223:114 and 109.123.223.114.

forum.c4.cz is handled by two mail servers: mx.skok.cz and mxbackup.skok.cz.

forum.c4.cz shares the same mail server setup as other domains, for instance mesi.cz, pageweb.cz, tropicalsun.cz, opendesign.cz and keriani.cz.

forum.c4.cz shares mail servers with other domains at least partially, including sscg.cz, syteza.cz, vaculka.cz, starkoc.net and poradce-zelenausporam.cz.

Host names with six IP numbers: mx.skok.cz points to 2001:1528:181::76:183, 2001:1528:181::76:244, 2001:1528:181::223:67, 77.78.76.183, 77.78.76.244 and 109.123.223.67. Host names with two IP numbers: mxbackup.skok.cz points to 2a01:430:36:1::253:129 and 89.185.253.129.

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

UzqdMrn CF johedugfp 2025-10-14