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openlearning.cz checked at 2025-12-08T06:34:36.626Z 1802ms 75/75/75 100% R:11 allDone:true timedOut:false

`openlearning.cz`

MX	`mx.web4u.cz`
		A	2001:1568::7012^{🇨🇿 WEB4U}
			PTR	`mx.web4u.cz`
		A	81.91.87.12^{🇨🇿 WEB4U}
			PTR	`mx.web4u.cz`
NS	`ns2.web4u.cz`
		A	2a02:a40:100:28ff::12^{🇨🇿 Radiokomunikace}
			PTR	`ns2.web4u.cz`
		A	85.207.53.12^{🇨🇿 Radiokomunikace}
			PTR	`ns2.web4u.cz`
NS	`ns.web4u.cz`
		A	2001:1568:fd::241^{🇨🇿 WEB4U}
			PTR	`ns.web4u.cz`
		A	185.14.224.241^{🇨🇿 WEB4U}
			PTR	`ns.web4u.cz`
A	34.245.252.67^{🇮🇪 Amazon}
		PTR	`ec2-34-245-252-67.eu-west-1.compute.amazonaws.com`

openlearning.cz resolves to one IP number: 34.245.252.67.

Other host names, for instance ec2-34-245-252-67.eu-west-1.compute.amazonaws.com, share IP numbers with openlearning.cz.

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

openlearning.cz shares the same name server setup as other domains, for instance computerkinesiology.cz, unitime.cz, hexik.cz, tonikovo.cz and clotrans.cz.

Host names with two IP numbers:

openlearning.cz is handled by a single mail server, mx.web4u.cz.

openlearning.cz shares the same mail server setup as other domains, for instance obyauta.com, smoke-shop.cz, klub-kanzelsberger.cz, filmtrip.cz and tipsport-travel.cz.

openlearning.cz shares mail servers with other domains to some extent, for instance pujcovna-lodi.cz.