Whois is a widely used Internet record listing to inform who owns a domain and how contact them. The Internet Corporation for Assigned Names and Numbers (ICANN) maintains all the records of domain name registration and ownership. Whois records have many advantages and maintain the integrity of the domain name registration and website ownership process.
A Whois Checker reports the administrator contact information, billing contact and the technical contact for a domain name listing or IP in the Whois database. A Whois IP search may also help you to determine the source of spam and other information related to a website.