The so-called WHOIS details of each registered domain contain details about the registrar firm, the registration and expiration dates, and also the names, phone number, postal address and email address of the owner, the administrator and the tech/billing person. WHOIS is a special protocol that lets you retrieve all of this information through a command line or by using one of the many websites that provide WHOIS lookup services. All contact details ought to be up-to-date as per the regulations of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the information is not legitimate, the internet domain might be reported and the result may be its deletion or losing its ownership. Several country-specific domain address extensions have certain limitations in connection with the editing of their WHOIS details, but in the standard scenario any detail can be modified easily and at any moment. Such a modification will appear on lookup Internet sites within a day.