WWW.RTSAK.COM - c-21.de

Search for IP or hostnames:

c-21.de checked at 2025-10-15T17:29:38.828Z 254ms 68/68/68 100% R:16

`c-21.de`

NS	`ns1.world4you.at`
		A	2607:f1c0:fe:53:185:132:32:253 ^{🇺🇸 IONOS-Anycast}
			PTR	`ns2.world4you.at`
		A	185.132.32.253^{🇩🇪 IONOS-Anycast}
			PTR	`ns2.world4you.at`
NS	`ns2.world4you.at`
		A	2001:8d8:fe:53:217:160:82:253 ^{🇩🇪 IONOS SE}
			PTR	`ns1.world4you.at`
		A	217.160.82.253^{🇩🇪 IONOS SE}
			PTR	`ns1.world4you.at`
MX	`mail.c-21.de`
		A	81.19.149.91^{🇦🇹 World4You Internet Services GmbH}
			PTR	`mail36.world4you.com`
A	81.19.145.76^{🇦🇹 World4You Internet Services GmbH}
		PTR	`www56.world4you.com`

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mail.c-21.de has c-21.de as its parent.

c-21.de maps to IP address 81.19.145.76.

Other host names, for instance ringsherum.at, kordes.biz, haus-radona.at, dhc-fuenfhaus.at and ashfordformula.co.at share IP numbers with c-21.de.

Two name servers ns1.world4you.at and ns2.world4you.at are delegated to c-21.de.

c-21.de uses the same name server configuration as other domains, such as kandlbinder.at, sys4you.at, bilderwald.at, guterplan.at and edv2.at.

Host names with two IPs:

ns1.world4you.at points to 2607:f1c0:fe:53:185:132:32:253 and 185.132.32.253.

ns2.world4you.at points to 2001:8d8:fe:53:217:160:82:253 and 217.160.82.253.

c-21.de is handled by a single mail server, mail.c-21.de.

mail.c-21.de points to one IP number: 81.19.149.91.

dbq