CF1757153628381-tsm20250906081701

WWW.RTSAK.COM - 21.cz

Search for IP or hostnames:

21.cz checked at 2025-09-06T10:13:48.363Z 370ms 88/88/88 100% R:22

`21.cz`

	MX	`mx1.bonicom.cz`
			A	2a01:430:230::5 ^{🇨🇿 MasterDC}
				PTR	`mx1.bonicom.cz`
			A	89.185.239.5^{🇨🇿 MasterDC}
				PTR	`mx1.bonicom.cz`
	MX	`mx2.bonicom.cz`
			A	2a01:6400:90:1001::75 ^{🇨🇿 WIA}
				PTR	`mx2.bonicom.cz`
			A	80.250.12.75^{🇨🇿 WIA}
				PTR	`mx2.bonicom.cz`
	NS	`ns1.bonicom.cz`
			A	2a01:6400:90:1001::76 ^{🇨🇿 WIA}
				PTR	`ns1.bonicom.cz`
			A	80.250.12.76^{🇨🇿 WIA}
				PTR	`ns1.bonicom.cz`
	NS	`ns2.bonicom.cz`
			A	2a01:430:230::7 ^{🇨🇿 MasterDC}
				PTR	`ns2.bonicom.cz`
			A	89.185.239.7^{🇨🇿 MasterDC}
				PTR	`ns2.bonicom.cz`
	A	81.2.195.125^{🇨🇿 INTERNET CZ}
			PTR	`d125wh.forpsi.com`

`cz`

	NS	`a.ns.nic.cz`
	NS	`b.ns.nic.cz`
	NS	`c.ns.nic.cz`
	NS	`d.ns.nic.cz`

Starts with same word
`21.cz`
`21.style`
`21.nl`
`21.agency`
`21.co`
`21.biz`
`21.lv`
`21.ru`
`21.co.za`
`21.finance`
`21.ax`
`21.nu`
`21.business`
`21.casino`
`21.pl`
`21.ee`
`21.tv`
`21.partners`
`21.to`
`21.ie`
`21.photos`
`21.cc`
`21.fr`
`21.by`
`21.com.es`
`21.life`
`21.run`
`21.net`
`21.la`
`21.ag`
`21.diamonds`
`21.cn`
`21.de`
`21.training`
`21.ca`
`21.construction`
`21.org`
`21.co.uk`
`21.vc`
`21.am`
`21.rs`
`21.com`
`21.bet`
`21.center`
`21.kz`
`21.web.app`
`21.su`
`21.network`
`21.si`
`21.gen.tr`
`21.ph`
`21.is`
`21.be`
`21.com.ua`
`21.pe`
`21.edu.ar`
`21.gg`
`21.capital`
`21.dk`
`21.email`
`21.sk`
`21.immo`

Starts similarily
`21.ph`
`12.lv`
`21.is`
`21.be`
`21.com.ua`
`12.cl`
`12.ph`
`12.ma`
`12.rs`
`21.pe`
`21.edu.ar`
`21.gg`
`21.capital`
`12.de`
`12.in-addr.arpa`
`21.dk`
`12.ag`
`21.email`
`12.kz`
`12.ie`
`12.com.ua`
`21.sk`
`12.cz`
`21.immo`
`12.eu`
`21.cz`
`12.uk`
`12.life`
`21.style`
`12.city`
`12.dk`
`21.nl`
`21.agency`
`12.org.ru`
`12.nu`
`21.co`
`21.biz`
`21.lv`
`21.ru`
`21.co.za`
`12.ai`
`21.finance`
`12.hk`
`21.ax`
`12.amsterdam`
`12.fr`
`21.nu`
`21.business`
`12.vc`
`21.casino`
`21.pl`
`21.ee`
`12.am`
`12.agency`
`12.digital`
`12.ac.cn`
`12.lt`
`21.tv`
`12.si`
`21.partners`
`21.to`
`21.ie`
`21.photos`
`21.cc`
`12.be`
`12.fi`
`12.cc`
`12.is`
`21.fr`
`12.chat`
`21.by`
`12.solutions`
`12.dyndns.tv`
`21.com.es`
`21.life`
`12.cm`
`21.run`
`12.world`
`12.by`
`21.net`
`12.org.ua`
`12.works`
`12.uz`
`21.la`
`21.ag`
`21.diamonds`
`21.cn`
`21.de`
`21.training`
`12.com`
`21.ca`
`12.ca`
`21.construction`
`21.org`
`12.sh.cn`
`12.ru`
`21.co.uk`
`12.limo`
`21.vc`
`21.am`
`12.biz`
`21.rs`
`12.to`
`21.com`
`12.net`
`12.la`
`21.bet`
`12.at`
`21.center`
`21.kz`
`12.ws`
`12.s3.amazonaws.com`
`21.web.app`
`21.su`
`21.network`
`21.si`
`21.gen.tr`

AI analysis

81.2.195.125 is the IP number that 21.cz points to.

IP numbers are shared between 21.cz and other host names such as 2realistic.com, gamont.eu, autoparkbrno.cz, icyb.cz, and poolmont.cz.

Two name servers, ns1.bonicom.cz and ns2.bonicom.cz, have been delegated for 21.cz.

Other domains like bonicom.com, lacina.org, skolabyznysu.cz, gepardfinance.eu, and jancermak.cz, share the same name server setup as 21.cz.

ns1.bonicom.cz and ns2.bonicom.cz both point to two IP numbers each: 2a01:6400:90:1001::76, 80.250.12.76 for ns1.bonicom.cz and 2a01:430:230::7, 89.185.239.7 for ns2.bonicom.cz.

The two mail servers, mx1.bonicom.cz and mx2.bonicom.cz, manage 21.cz.

Just like domains such as chlor.cz, rohas.cz, gepardpraha.cz, rapide.cz, and clinterap.cz, 21.cz also shares the same mail server setup.

Domains such as oki.sk, bonicom.eu, gpf.cz, bonicom.cz, and gpa.cz share some mail servers, at least partially, with 21.cz.

The mail servers mx3.bonicom.cz, mx4.bonicom.cz, titan.bonicom.cz, cluster3.eu.messagelabs.com, and cluster3a.eu.messagelabs.com are typically used in conjunction.

mx1.bonicom.cz and mx2.bonicom.cz both point to two IP numbers each: 2a01:430:230::5, 89.185.239.5 for mx1.bonicom.cz and 2a01:6400:90:1001::75, 80.250.12.75 for mx2.bonicom.cz.

dbq

hrtadWl CF johedugfp 2025-09-06