Transferring a domain name from one company to another usually involves the use of a unique transfer code, which different companies refer to as an EPP key, a domain name password or an AuthInfo code. This code can be used as a security measure against unwanted transfer attempts with all generic and with most country-code extensions. It can be obtained only by the domain owner and is provided by the present registrar company. It must be given to the new registrar because the transfer process cannot be started without it. The code is case-sensitive and often includes digits and special symbols, so as to impede unauthorized people from deciphering it. Some domain name registrars even reset the codes of domains registered through them once in a while for even greater safety.