Transferring a domain from one registrar company to another normally entails the use of a special domain authorization code, which different registrar companies call an EPP authentication code, a domain name password or an Auth code. This code can be used as a protection mechanism against unsolicited transfer attempts with all generic and with most country-code extensions. The code can be obtained only by the owner of the given domain name and is provided by the present domain registrar company. It must be given to the new domain name registrar company because the transfer procedure cannot be initiated without it. The code is case-sensitive and ordinarily contains numbers and special symbols, so as to obstruct unauthorized individuals from cracking it. Some registrar companies even alter the codes of domain names registered through them after a certain interval of time for even greater security.