The so-called WHOIS details of every registered domain name contain information about the registrar firm, the registration and expiration dates, and also the names, telephone number, postal address and email address of the owner, the administrator and the tech/billing person. WHOIS is a special protocol that enables you to get all this information through a command line or through one of the numerous sites that provide WHOIS lookup services. All details 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 info is not legitimate, the internet domain can be reported and the result could be its deletion or losing its ownership. A number of country-specific internet domain extensions have specific limitations for the change of their WHOIS details, but in the general scenario any detail can be changed openly and at any time. Such a modification will appear on lookup sites within 24 hours.