Whois Checker is a powerful tool to check availability of multiple domain names or monitor domain name expiration. You can check a large list of the domain names, save it for later checking and find out great expired domain names using date filters. Also you can check all available gTLDs of a particular domain name.
A WHOIS reveals crucial information about a domain. By performing a search you can find out details like who owns domain, contact information of the owner, address, phone number, email address and more. A WHOIS lookup is the easiest way to find out the availability of domains. You can also access information like the expiry of a domain so that you can book it before someone else does.
Whenever someone registers a domain, they submit their personal information to the Internet Corporation for Assigned Names and Numbers (ICANN). You can think of it like registering your house with the government.