The so-called WHOIS details of every single registered domain include information 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 special protocol that allows you to retrieve all of this info through a command line or via one of the numerous Internet websites that offer WHOIS lookup services. All details should be up-to-date in line with the regulations of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the info is not correct, the domain name can be reported and the result could be its deletion or losing its ownership. A number of country-specific domain extensions have specific limitations in connection with the modification of their WHOIS info, but in the general case any detail can be edited freely and at any moment. Such a change will appear on lookup sites within twenty four hours.