You can find out who owns a domain by going to www.networksolutions.com/whois/index.jsp
Just type domain name in the search box, and it will bring out the registrant information for you including address and phone numbers.
However, sometimes, this information may be private if the owner of the domain choose the private option for whatever reason.

You can find the owner details of a domain name by doing whois lookup here www.whoisxy.com/

You can find the owner of a domain name by doing who is look up in whoislookup,reverse ip look up,ping test,Dns query etc.