Finding out where site is registered

I forgot where I registered my site name

[Mcadieux]

I started a web site about 2 years ago for a club I was in. This was before I did web sites as a side job. Now I can't remember where I registered the sites domain. How can I figure it out?

[nancyb]

plug in the IP or domain name here http://dnsstuff.com/ [dnsstuff.com] in the "WHOIS Lookup" box.