Each active domain is registered on the name of an individual and through the registration procedure a number of details are presented - the owner’s names, address, e-mail, telephone number, and so on. This info plus the registrar company name and the registration/expiration dates is addressed as WHOIS of the domain and in accordance with the policies of Internet Corporation for Assigned Names and Numbers (ICANN) it ought to be current and legitimate. If a domain name has incorrect WHOIS details, it can be reported and if the details are not fixed, the domain may be deleted or the registrar company may take over its ownership. By default, the WHOIS information is public and can be seen on various lookup Internet sites, or for a limited number of country-code extensions - on the Internet sites of the respective Registry companies. All businesses that offer registration services are obliged to provide an effective way for their customers to access and modify the WHOIS information of any Internet domain they own as much as the particular TLD allows it.