WWW.RTSAK.COM - f21.ch

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f21.ch checked at 2025-09-07T01:00:58.724Z 333ms 95/95/95 100% R:16

`f21.ch`

NS	`ns1.hosttech.ch`
		A	2001:1680:101:1::2 ^{🇨🇭 BSE Software GmbH / SolNet}
		A	82.220.34.231^{🇨🇭 BSE Software GmbH / SolNet}
			PTR	`ns1.tripledns.eu`
NS	`ns2.hosttech.ch`
		A	2001:1af8:4700:a120:4::2 ^{🇳🇱 LeaseWeb Netherlands / AMS-01}
		A	5.79.97.178^{🇳🇱 LeaseWeb Netherlands / AMS-01}
			PTR	`ns2.tripledns.eu`
NS	`ns3.hosttech.ch`
		A	2a01:4f8:c0c:289d::2 ^{🇩🇪 Hetzner}
		A	94.130.74.45^{🇩🇪 Hetzner}
			PTR	`ns3.tripledns.eu`
MX	`mail1.hosttech.eu`
		A	2001:1680:101:83a::d8 ^{🇨🇭 BSE Software GmbH / SolNet}
			PTR	`mail1.hosttech.eu`
		A	193.203.253.28^{🇨🇭 hosttech-AS}
			PTR	`mail1.hosttech.eu`
MX	`mail2.hosttech.eu`
		A	2a11:8b80:1000:1::4c ^{🇨🇭 Init7}
			PTR	`mail2.hosttech.eu`
		A	45.131.253.20^{🇨🇭 Init7}
			PTR	`mail2.hosttech.eu`
A	82.220.38.133^{🇩🇪 BSE Software GmbH / SolNet}
		PTR	`mx275.mail.hosttech.eu`

Up
`mail.f21.ch`

The parent of mail.f21.ch is f21.ch.

IP number 82.220.38.133 is pointed to by f21.ch.

IP numbers are shared between f21.ch and other host names such as pferde-foto.ch, mail.klauser-net.ch, mail.pintcrew.ch, mail.blackforest.ch, and netshape.ch.

Three name servers, ns1.hosttech.ch, ns2.hosttech.ch, and ns3.hosttech.ch, are delegated to f21.ch.

The name servers of f21.ch are at least partially shared with other domains such as dogging.ch, kandlbinder.ch, wehner.ch, humanfacts.de, and padanyas.de.

ns1.hosttech.ch, 2001:1680:101:1::2, and 82.220.34.231 are associated with each other. Similarly, ns2.hosttech.ch, 2001:1af8:4700:a120:4::2, and 5.79.97.178 are interconnected. Additionally, ns3.hosttech.ch, 2a01:4f8:c0c:289d::2, and 94.130.74.45 are linked together.

Two mail servers, mail1.hosttech.eu and mail2.hosttech.eu, manage f21.ch.

Just like other domains such as filmexerzitien.ch, somo.ch, westreicher.com, hotel-zimmer.ch, and chsel.ch, f21.ch also has the same mail server setup.

mail1.hosttech.eu and mail2.hosttech.eu each point to two IP numbers: 2001:1680:101:83a::d8, 193.203.253.28 and 2a11:8b80:1000:1::4c, 45.131.253.20 respectively.

dbq