WWW.RTSAK.COM - openlearning.cz

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openlearning.cz checked at 2025-10-15T18:19:27.020Z 411ms 75/75/75 100% R:15

`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 points to an IP address: 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.

Two name servers ns2.web4u.cz and ns.web4u.cz handle the delegation for openlearning.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:

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

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

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

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

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

mx.web4u.cz resolves to two IPs: 2001:1568::7012 and 81.91.87.12.

dbq