The so-called WHOIS details of each registered domain name include information about the registrar firm, the registration and expiration dates, plus 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 enables you to retrieve all this information either through a command line or through one of the many Internet websites that provide WHOIS lookup services. All contact details should be up-to-date as per the rules of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the info is not correct, the domain could be reported and the result could be its removal or losing its ownership. Several country-specific domain extensions have specific limitations concerning the change of their WHOIS information, but in the standard case any detail can be changed easily and at any time. Such a change will show up on lookup Internet sites within 24 hours.