Transferring a domain name from one company to another traditionally involves the use of a special transfer code, which different companies refer to as an EPP key, a domain password or an Auth code. This code can be used as a security measure against unsanctioned transfer attempts with all generic and with most country-code extensions. The code can be obtained only by the domain owner and is provided by the current domain registrar company. It must be given to the new registrar company because the transfer process cannot be started without it. The code is case-sensitive and generally comprises of digits and special characters, so as to obstruct unauthorized people from cracking it. Some companies even alter the codes of domain names registered through them once in a while for even better security.