Transferring a domain from one company to another normally entails the use of a special transfer authorization code, which different registrar companies refer to as an EPP authorization code, a domain password or an Auth-Info code. This code can be used as a protection measure against unapproved transfer attempts with all generic and with most country-code extensions. It can be obtained only by the owner of the given domain name and is issued by the present 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 ordinarily comprises of digits and special symbols, so as to stop unauthenticated individuals from breaking it. Some companies even change the codes of domains registered through them after a certain interval of time for greater security.