WWW.RTSAK.COM - sip.cz

Search for IP or hostnames:

sip.cz checked at 2025-10-17T12:52:59.057Z 605ms 78/78/78 100% R:22

`sip.cz`

MX	`mx1.jurasek.cz`
		A	2a02:17a0:fff1:10:aaaa::13 ^{🇨🇿 GRAPESC}
			PTR	`mx1.jurasek.cz`
		A	185.52.172.89^{🇨🇿 ISP Alliance}
			PTR	`mx1.jurasek.cz`
NS	`ns.jurasek.cz`
		A	2a02:17a0:fff1:10:aaaa::10 ^{🇨🇿 GRAPESC}
			PTR	`ns.jurasek.cz`
		A	185.52.172.89^{🇨🇿 ISP Alliance}
			PTR	`mx1.jurasek.cz`
NS	`ns.jurasek.eu`
		A	2a05:d014:306:6a00:4880:f596:915d:b86c ^{🇩🇪 Amazon}
		A	18.193.185.118^{🇩🇪 Amazon}
			PTR	`ec2-18-193-185-118.eu-central-1.compute.amazonaws.com`
NS	`ns.jurasek.org`
		A	109.233.76.6^{🇨🇿 NETLANCERS-AS}
			PTR	`ns.jurasek.org`
A	185.52.172.89^{🇨🇿 ISP Alliance}
		PTR	`mx1.jurasek.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

sip.cz resolves to one IP number: 185.52.172.89.

other host names including mx1.jurasek.cz, jurasek.cz, webs.jurasek.cz, jurasek.org and yuras.net share IP numbers with sip.cz.

sip.cz is delegated to three name servers ns.jurasek.cz, ns.jurasek.eu and ns.jurasek.org.

sip.cz at least partially shares name servers with other domains, for instance jurasek.org, yuras.net, machan.cz, maryska.eu and kruton.cz.

Hosts with two IP numbers:

ns.jurasek.cz points to: 2a02:17a0:fff1:10:aaaa::10 and 185.52.172.89.

ns.jurasek.eu points to: 2a05:d014:306:6a00:4880:f596:915d:b86c and 18.193.185.118.

Hosts with one IP number:

ns.jurasek.org points to: 109.233.76.6.

sip.cz is handled by a single mail server, mx1.jurasek.cz.

sip.cz shares the same mail server setup as other domains, for instance jurasek.eu, vallhala.net, igun.cz, martinsail.cz and jurasek.cz.

mx1.jurasek.cz resolves to two IP numbers: 2a02:17a0:fff1:10:aaaa::13 and 185.52.172.89.

dbq