The so-called WHOIS details of every registered domain contain information about the registrar firm, the registration and expiration dates, in addition to the names, phone number, postal address and email address of the owner, the admin and the tech/billing person. WHOIS is a special protocol that lets you get all of this information through a command line or through one of the numerous sites that offer WHOIS lookup services. All info ought to be up-to-date in accordance with the rules of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the information is not legitimate, the domain can be reported and the result might be its removal or losing its ownership. A number of country-specific domain name extensions have certain limitations in connection with the change of their WHOIS information, but in the standard situation any detail can be changed easily and at any moment. Such a modification will appear on lookup websites within twenty four hours.