CF1757110145620-tsm20250905202113

DNSWHOIS.INFO - 21.cz

Search for IP or hostnames:

21.cz checked at 2025-09-05T22:09:05.598Z 355ms 88/88/88 100% R:26

`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 to 21.cz.

The name server setup of 21.cz is identical to that of other domains such as bonicom.com, lacina.org, skolabyznysu.cz, gepardfinance.eu, and jancermak.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.

Two mail servers, mx1.bonicom.cz and mx2.bonicom.cz, manage 21.cz.

Like other domains such as chlor.cz, rohas.cz, gepardpraha.cz, rapide.cz, and clinterap.cz, 21.cz also has the same mail server setup.

Domains such as oki.sk, bonicom.eu, gpf.cz, bonicom.cz, and gpa.cz share at least some mail servers 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 frequently utilized 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

jmQFIdL CF johedugfp 2025-09-05