The so-called WHOIS details of every registered domain include information 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 administrator and the tech/billing person. WHOIS is a specific protocol that allows you to obtain all of this info either through a command line or through one of the many sites that offer WHOIS lookup services. All information ought to be up-to-date as per the policies of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the details are not correct, the domain address can be reported and the result might be its deletion or losing its ownership. A number of country-specific domain address extensions have certain limitations for the editing of their WHOIS info, but in the typical scenario any detail can be modified easily and at any moment. Such a change will show up on lookup sites within 24 hours.