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 security mechanism against unauthorized transfers with all generic and with most country-code extensions. The code can be obtained only by the domain name owner and is provided by the current domain name registrar company. It must be given to the new domain name registrar company because the transfer cannot be initiated without it. The code is case-sensitive and frequently comprises of numbers and special characters, so as to hinder unauthorized persons from deciphering it. Certain domain name registrars even reset the codes of domains registered through them after a given amount of time for even greater security.