How to find the domaine name(s) associated to a given IP?

[Mariane]

Hi,

To find the IP of a domain name, an easy way is to ping:

ping ubuntuforums.org

and then "control C" to stop. The IP 91.189.94.12 appears between brackets.

But how to do the reverse? What command could I type, using 91.189.94.12, which would tell me "ubuntuforums.org"?

[Morbius1]

whois 91.189.94.12

Will give you more information than you'd ever need.

host 91.189.94.12

Will give you the url but not the one you are expecting because 91.189.94.12 doesn't resolve to ubuntu.org. It resolves to www.canonical.com.

The easiest way is to put the ip address in your internet browser.