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The WHOIS tool is very important when you want to get results on who owns a particular domain. This provides the domain name and the contact information of the people who own that domain. Once a domain has been registered, the ICANN (International Corporation for Assigned Names and Numbers). In this international database you can get the IP information where you can get the domain owners. This assists you to get in touch with your competitors and even learn how they are succeeding in their business.
The Whois Checker is a free tool that can be used by any device as long as it's connected online. All you have to do in the input section, you have to type the domain information and then click the search button.