The so-called WHOIS details of any registered domain name include details about the registrar firm, the registration and expiration dates, in addition to the names, phone number, postal address and e-mail address of the owner, the admin and the tech/billing person. WHOIS is a special protocol that allows you to get all this info either through a command line or using one of the numerous sites which provide WHOIS lookup services. All info should be up-to-date as per the regulations of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the details are not legitimate, the internet domain could be reported and the result may be its deletion or losing its ownership. A number of country-specific domain name extensions have certain limitations regarding the editing of their WHOIS information, but in the standard situation any detail can be edited freely and at any moment. Such a modification will appear on lookup Internet sites within a day.