CF1764269221926-tsm20251127171005

RTSAK.COM - crs.as

Search for IP or hostnames:

crs.as checked at 2025-11-27T18:47:01.906Z 444ms 94/94/94 100% R:16 allDone:true timedOut:false

crs.as

MXmail.crs.as
A81.91.85.93🇨🇿 WEB4U
PTRmail.cybers.cz
NSns1.cyberhost.cz
A81.91.85.93🇨🇿 WEB4U
PTRmail.cybers.cz
NSns2.cyberhost.cz
A81.91.85.252🇨🇿 WEB4U
PTRns2.cybers.cz
MXcrs-as.mail.protection.outlook.com
A2a01:111:f403:ca04::a 🇮🇪 Microsoft
PTRmail-du0pr03cu00102.inbound.protection.outlook.com
A2a01:111:f403:ca04::c 🇮🇪 Microsoft
PTRmail-db9pr02cu00204.inbound.protection.outlook.com
A2a01:111:f403:ca09::5 🇳🇱 Microsoft
PTRmail-am1pr04cu00105.inbound.protection.outlook.com
A2a01:111:f403:ca09::f 🇳🇱 Microsoft
PTRmail-am7pr05cu00307.inbound.protection.outlook.com
A52.101.68.0🇮🇪 Microsoft
PTRmail-db3pr0202cu00100.inbound.protection.outlook.com
A52.101.68.3🇮🇪 Microsoft
PTRmail-db7pr03cu00403.inbound.protection.outlook.com
A52.101.73.1🇳🇱 Microsoft
PTRmail-am3pr04cu00501.inbound.protection.outlook.com
A52.101.73.28🇳🇱 Microsoft
PTRmail-am7pr05cu00204.inbound.protection.outlook.com
A81.91.85.229🇨🇿 WEB4U
PTRm136-web2.server4u.cz

as

NSns1.asnic.biz
NSns2.asnic.info
NSns3.asnic.org
NSns4.asnic.uk
NSns5.asnic.us

Up

mail.crs.as
www.crs.as

Starts with same word

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crs.com

AI analysis

crs.as is parent of mail.crs.as and www.crs.as.

crs.as resolves to a single IP address: 81.91.85.229.

Other host names including www.crs.as, *.cyberdesign.cz, autocermak.cz, m136-web2.server4u.cz and darkac.cz share IP numbers with crs.as.

crs.as's delegation uses two name servers, ns1.cyberhost.cz and ns2.cyberhost.cz.

crs.as shares the same name server setup as other domains, for example darkac.cz, liptak.cz, preklady-hrochova.cz, remesovi.cz and forbar.cz.

Host names with a single IP:

ns1.cyberhost.cz points to 81.91.85.93.

ns2.cyberhost.cz points to 81.91.85.252.

crs.as is handled by two mail servers: mail.crs.as and crs-as.mail.protection.outlook.com.

Host names with eight IP numbers: The host name crs-as.mail.protection.outlook.com resolves to 2a01:111:f403:ca04::a, 2a01:111:f403:ca04::c, 2a01:111:f403:ca09::5, 2a01:111:f403:ca09::f, 52.101.68.0, 52.101.68.3, 52.101.73.1 and 52.101.73.28. Host names with one IP number: The host name mail.crs.as resolves to 81.91.85.93.