Transferring a domain from one company to another normally involves the use of a unique transfer code, which different companies call an EPP authentication code, a domain name password or an AuthInfo code. This code can be used as a safety mechanism against unwanted transfer attempts with all generic and with most country-code extensions. It can be obtained only by the owner of the specific domain and is provided by the current registrar company. It must be given to the new registrar because the transfer process cannot be initiated without it. The code is case-sensitive and commonly comprises of numbers and special characters, so as to prevent unauthenticated individuals from cracking it. Some domain registrars even alter the codes of domain names registered through them after a certain amount of time for better security.