WWW.RTSAK.COM - openn.cz

Search for IP or hostnames:

openn.cz checked at 2025-09-29T19:43:38.131Z 1479ms 168/168/168 100% R:13

`openn.cz`

NS	`ns2.gransy.com`
		A	2001:19f0:6801:474:5400:1ff:fec5:8efb ^{🇫🇷 The Constant Company}
		A	2001:19f0:7401:81e0:5400:1ff:fec5:8ef6 ^{🇬🇧 The Constant Company}
		A	95.179.192.121^{🇬🇧 The Constant Company}
			PTR	`95.179.192.121.vultrusercontent.com`
		A	217.16.185.221^{🇨🇿 VSHosting s.r.o.}
			PTR	`ns2.gransy.com`
		A	217.69.4.49^{🇫🇷 The Constant Company}
			PTR	`217.69.4.49.vultrusercontent.com`
NS	`ns3.gransy.com`
		A	2a02:750:7::2e7 ^{🇸🇪 Portlane}
			PTR	`2a02-750-7--2e7-static.glesys.net`
		A	2a02:750:8::32 ^{🇳🇱 Portlane}
			PTR	`2a02-750-8--32-static.glesys.net`
		A	46.21.100.103^{🇳🇱 Portlane}
			PTR	`46-21-100-103-static.glesys.net`
		A	77.78.126.35^{🇨🇿 Casablanca INT a.s.}
		A	109.74.7.71^{🇸🇪 Portlane}
			PTR	`109-74-7-71-static.glesys.net`
NS	`ns4.gransy.com`
		A	2001:19f0:5401:69b:5400:1ff:fec5:8f3f ^{🇺🇸 The Constant Company}
		A	2a00:1a28:2010:1::89 ^{🇳🇴 Portlane}
			PTR	`2a00-1a28-2010-1--89-static.glesys.net`
		A	66.42.94.136^{🇺🇸 The Constant Company}
			PTR	`66.42.94.136.vultrusercontent.com`
		A	80.67.7.209^{🇳🇴 Portlane}
			PTR	`80-67-7-209-static.glesys.net`
NS	`ns5.gransy.com`
		A	2a02:750:5::538 ^{🇸🇪 Portlane}
			PTR	`2a02-750-5--538-static.glesys.net`
		A	31.192.227.223^{🇸🇪 Portlane}
			PTR	`31-192-227-223-static.glesys.net`
NS	`ns.gransy.com`
		A	2001:19f0:5001:1caf:5400:1ff:fec5:8d50 ^{🇳🇱 The Constant Company}
		A	45.76.90.43^{🇩🇪 The Constant Company}
			PTR	`45.76.90.43.vultrusercontent.com`
		A	77.78.104.149^{🇨🇿 Casablanca INT a.s.}
			PTR	`ns.gransy.com`
		A	95.179.136.180^{🇳🇱 The Constant Company}
			PTR	`95.179.136.180.vultrusercontent.com`
MX	`openn-cz.mail.protection.outlook.com`
		A	2a01:111:f403:ca04::7 ^{🇮🇪 Microsoft}
			PTR	`mail-db4pr02cu00307.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::9 ^{🇮🇪 Microsoft}
			PTR	`mail-db7pr03cu00601.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::a ^{🇮🇪 Microsoft}
			PTR	`mail-du0pr03cu00102.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::d ^{🇮🇪 Microsoft}
			PTR	`mail-db6pr03cu00105.inbound.protection.outlook.com`
		A	52.101.68.32^{🇮🇪 Microsoft}
			PTR	`mail-db3pr0202cu00200.inbound.protection.outlook.com`
		A	52.101.73.2^{🇳🇱 Microsoft}
			PTR	`mail-as9pr07cu00302.inbound.protection.outlook.com`
		A	52.101.73.4^{🇳🇱 Microsoft}
			PTR	`mail-am0pr83cu00404.inbound.protection.outlook.com`
		A	52.101.73.22^{🇳🇱 Microsoft}
			PTR	`mail-am7pr05cu00106.inbound.protection.outlook.com`
A	2a0d:5940:43:1:: ^{🇩🇪 Dataforest}
A	176.96.139.18^{🇩🇪 Dataforest}
		PTR	`mksrv2.krause.cz`

`cz`

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

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AI analysis

openn.cz points to two IP numbers: 2a0d:5940:43:1:: and 176.96.139.18.

Other host names, for instance mksrv1.krause.cz, sportovni-pohary.cz, igormikulaphotography.com, igormikula.com and x-pozice.cz share IP numbers with openn.cz.

openn.cz is delegated to five name servers: ns2.gransy.com, ns3.gransy.com, ns4.gransy.com, ns5.gransy.com and ns.gransy.com.

openn.cz at least partially shares name servers with other domains, for instance smartdent.info, dddagmar.cz, lasernet.cz, krida.net and koneprofilm.cz.

Host names with five IP numbers:

ns2.gransy.com points to: 2001:19f0:6801:474:5400:1ff:fec5:8efb, 2001:19f0:7401:81e0:5400:1ff:fec5:8ef6, 95.179.192.121, 217.16.185.221 and 217.69.4.49.

ns3.gransy.com points to: 2a02:750:7::2e7, 2a02:750:8::32, 46.21.100.103, 77.78.126.35 and 109.74.7.71.

Host names with four IP numbers:

ns4.gransy.com points to: 2001:19f0:5401:69b:5400:1ff:fec5:8f3f, 2a00:1a28:2010:1::89, 66.42.94.136 and 80.67.7.209.

ns.gransy.com points to: 2001:19f0:5001:1caf:5400:1ff:fec5:8d50, 45.76.90.43, 77.78.104.149 and 95.179.136.180.

Host names with two IP numbers:

ns5.gransy.com points to: 2a02:750:5::538 and 31.192.227.223.

openn.cz is handled by a single mail server, openn-cz.mail.protection.outlook.com.

openn-cz.mail.protection.outlook.com resolves to eight IP addresses: 2a01:111:f403:ca04::7, 2a01:111:f403:ca04::9, 2a01:111:f403:ca04::a, 2a01:111:f403:ca04::d, 52.101.68.32, 52.101.73.2, 52.101.73.4 and 52.101.73.22.

dbq