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A WHOIS checker is a tool that enables users to look up information about a particular domain name. This information typically includes the name and contact details of the domain registrant, as well as the domain's creation and expiration dates, and the name and contact details of the domain's registrar. The tool can be used to investigate the ownership of a domain, check if a particular domain is available for registration, or to gather information about potential domain squatters or spammers. WHOIS checker tools can be found online and are often provided by domain registration companies or other web services
