Transferring a domain name from one registrar company to another typically involves the use of a special domain name authorization code, which different registrar companies refer to as an EPP authorization code, a domain name password or an Auth code. This code can be used as a safety measure against unsanctioned transfer attempts with all gTLD and with most ccTLD extensions. The code can be obtained only by the domain name registrant and is provided by the present registrar company. It must be given to the new domain registrar company because the transfer process cannot be started without it. The code is case-sensitive and traditionally includes numbers and special symbols, so as to obstruct unauthorized individuals from deciphering it. Some registrars even alter the codes of domains registered through them after a given interval of time for greater safety.