Transferring a domain from one registrar company to another normally involves the use of a unique domain authorization code, which different companies call an EPP key, a domain name password or an AuthInfo code. This code can be used as a safety mechanism against unsanctioned transfer attempts with all generic and with most country-code extensions. The code can be obtained only by the owner of the given domain and is provided by the current domain 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 normally includes digits and special symbols, so as to impede unauthenticated individuals from cracking it. Certain domain registrars even change the codes of domains registered through them after a given interval of time for even greater security.