The so-called WHOIS details of every single registered domain include information regarding the registrar company, the registration and expiration dates, along with the names, telephone number, postal address and e-mail address of the owner, the administrator and the tech/billing person. WHOIS is a specific protocol that lets you obtain all this information either through a command line or via one of the numerous sites that provide WHOIS lookup services. All information must be up-to-date in accordance with the policies of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the details are not accurate, the domain address might be reported and the result might be its removal or losing its ownership. A number of country-specific domain address extensions have specific limitations in connection with the change of their WHOIS info, but in the typical situation any detail can be modified freely and at any moment. Such a change will show up on lookup sites within 1 day.