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Use Verisign’s Whois search tool to find information on domain names, TLDs, registrars and name servers.

Find out who owns a domain and if the one you want is available with our Whois domain owner lookup tool.

For example, in the domain name icann.org, the first part of the name, icann, represents a second-level domain within the top-level domain org. Domain names can also have more than two segments, as …

The ICANN registration data lookup tool gives you the ability to look up the current registration data for domain names and Internet number resources. The tool uses the Registration Data Access Protocol …

Use the Network Solutions WHOIS lookup to discover who owns a website or domain name. Learn how to keep your own domain registration information private.

WHOIS lets you discover if a domain name is already owned or if it is available for you to purchase. Find the info you're looking for with a WHOIS search.