WHOIS search/lookup provides domain name registration information such as owner of a domain name, an IP address, domain expiration date, domain created date, DNS, name server etc., WHOIS clients uses WHOIS protocol to connect to a WHOIS server and to perform lookups. By default WHOIS runs on TCP port 43.
WHOIS Privacy issue:
Registrant’s personal contact details, such as name, address, email and telephone number are made easily accessible to anyone who performs whois search on a particular domain. To protect the personal contact details of the registrant, most of the domain registrars offer private registrations, where the domain registrant contact information will be shown as instead of real owner.
To perform a Whois lookup, use this popular Whois lookup tool from networksolutions and enter your perefered domain name to see the details.