The so-called WHOIS details of every registered domain name contain info about the registrar company, the registration and expiration dates, in addition to the names, phone number, postal address and e-mail address of the owner, the administrator and the tech/billing person. WHOIS is a specific protocol that permits you to obtain all this info either through a command line or by using one of the numerous websites that provide WHOIS lookup services. All information ought to 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 correct, the internet domain may be reported and the result may be its removal or losing its ownership. Some country-specific domain address extensions have specific limitations concerning the editing of their WHOIS info, but in the standard scenario any detail can be modified openly and at any time. Such a change will appear on lookup websites within twenty four hours.