Transferring a domain from one company to another generally entails the use of a unique authorization code, which different registrar companies refer to as an EPP key, a domain name password or an Auth-Info code. This code can be used as a security measure against unwanted transfers with all generic and with most country-code extensions. The code can be obtained only by the owner of the particular domain and is provided by the current domain registrar company. It must be given to the new domain name registrar company because the transfer procedure cannot be initiated without it. The code is case-sensitive and frequently includes numbers and special characters, so as to obstruct unauthenticated individuals from deciphering it. Certain companies even change the codes of domain names registered through them from time to time for greater security.