how to find out who owns a domain name

I have never registered a domain name before as I'm used to be a freelancer to make money online.Recently I want to run my own website as I heard that many webmasters make lots of money on the net.I find a domain and I really love it.Unfortunately it was regestered but not used,how can I find out who have registered that domain name?I need to contact him in order to buy it.

search domain tools in the big G and you will find a lot of sites that can search who owns a domain name
I personally use Firefox's searchstatus to do this
You easily know the Page Rank ,Alexa Rank,whois,backlinks and more about any sites you are visiting

with the help of domaintools and who.is you can check registrar name of domain name.

To find out the owner of the domain name,
Just visit this site http://www.whoisxy.com/, It has the best information of whois information,domain owner details, IP address, IP address to domain, domain name to IP,domain name, and DNS query details..........

with the help of domaintools and who.is you can check registrar name of domain name.

I was aware of who is, which is use for finding the hosting company of a website and I'll check domaintools, thanks for that.

If that domain is not in use anymore, that means registration has expired. Then your job will be very much easy for you. Just log in to the domain registration provider of that website and renew it for yourself.

If this field is not used more, it means that the registration has expired. So your work will be very easy for you. Simply log into domain registration provider of this site and renew it for yourself.