The so-called WHOIS details of every single registered domain name contain information regarding the registrar company, the registration and expiration dates, as well as the names, telephone number, postal address and email address of the owner, the admin and the tech/billing person. WHOIS is a special protocol that allows you to obtain this info either through a command line or through one of the numerous sites that provide WHOIS lookup services. All info must be up-to-date in line with the rules of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the information is not correct, the internet domain could be reported and the result may be its removal or losing its ownership. Several country-specific domain address extensions have specific limitations in connection with the editing of their WHOIS info, but in the standard case any detail can be changed easily and at any time. Such a change will appear on lookup Internet sites within 1 day.