Transferring a domain from one company to another commonly involves the use of a special authorization code, which different registrar companies call an EPP key, a domain name password or an Auth-Info code. This code can be used as a security mechanism against unwanted transfer attempts with all generic and with most country-code extensions. The code can be obtained only by the domain name owner and is provided by the current domain registrar company. It must be given to the new registrar company because the transfer cannot be started without it. The code is case-sensitive and typically includes numbers and special characters, so as to obstruct unauthorized people from deciphering it. Some registrars even reset the codes of domains registered through them after a certain amount of time for better safety.