The so-called WHOIS details of every single registered domain name include information about the registrar firm, the registration and expiration dates, plus the names, telephone number, postal address and email address of the owner, the administrator and the tech/billing person. WHOIS is a specific protocol that lets you get all this information through a command line or by using one of the many sites that provide WHOIS lookup services. All details must be up-to-date in accordance with the regulations of ICANN, the Internet Corporation for Assigned Names and Numbers. If some of the info is not correct, the domain address can be reported and the result might be its removal or losing its ownership. Some country-specific internet domain extensions have certain limitations in connection with the modification of their WHOIS info, but in the general scenario any detail can be edited openly and at any moment. Such a change will appear on lookup websites within 1 day.