How to find who owns IP address

[Daretodream]

Hello, I use Urchin and want to know if there is a way to find out who these IP address belong to. I'm new to the web, and I'm very sure you get sick of the newbie questions. BUT.... could someone answer this question? Is there a way to find out who is looking at your site?

[fiestagirl]

www.arin.net

[Imaster]

http**://www.dnsstuff.com/tools/whois.ch?ip=00.00.00.00

Replace the 0's above with the ip address.

[mrmean]

whois.net