The so-called WHOIS details of any registered domain name include information about the registrar company, the registration and expiration dates, as well as the names, telephone number, postal address and e-mail address of the owner, the admin and the tech/billing person. WHOIS is a special protocol that allows you to get all this information through a command line or by using one of the many websites which provide WHOIS lookup services. All information should 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 legitimate, the domain address may be reported and the result could be its deletion or losing its ownership. A few country-specific domain extensions have specific limitations in connection with the change of their WHOIS information, but in the standard situation any detail can be changed freely and at any moment. Such a modification will show up on lookup Internet sites within 1 day.