The Whois tool is a network utility that allows users to retrieve domain registration information from a central database called the Whois database.
The information that can be obtained through the Whois tool includes the domain name's owner, registration date, expiration date, name servers, and contact information for the domain registrar.
The Whois tool is commonly used by website owners, domain name investors, and law enforcement agencies to obtain information about a domain name's ownership and contact information. It can also be used to check the availability of domain names and to identify potential trademark infringement issues.