A person who obtains a new domain name registers his information in the Internet Corporation for Assigned Names and Numbers (ICANN) database. If you want to know the owner of a particular domain, ICANN offers a free service called WHOIS, which is a public access query service you can use to find the contact information of a registrant. The contact information shows the name, address and contact number provided when the domain was registered. You can access this database through domain-name registrar sites, and through specific sites offering WHOIS services.
Go to a site offering WHOIS services, such as InterNIC.net, GoDaddy.com or Whois.net.
Enter the domain into the search form, then click "Submit."
View the registrant details displayed on the screen.