Each and every active domain name is registered on the name of a particular person and through the registration procedure a number of details are submitted - the owner’s names, address, e-mail, mobile phone number, etc. This info as well as the registrar company name and the registration/expiration dates is known as WHOIS of the Internet domain and in accordance with the policies of Internet Corporation for Assigned Names and Numbers (ICANN) it should be current and correct. If an Internet domain has invalid WHOIS details, it could be reported and if the details are not fixed, the domain name could be erased or the registrar company may take over its ownership. By default, the WHOIS info is public and can be seen on various lookup Internet sites, or for a smaller number of country-code extensions - on the websites of the respective Registry companies. All companies that provide registration services are obliged to provide an effective way for their customers to access and change the WHOIS info of any domain name they own as much as the particular TLD allows it.