Transferring a domain name from one company to another ordinarily entails the use of a unique domain authorization code, which different companies refer to as an EPP authorization code, a domain password or an AuthInfo code. This code can be used as a protection measure against unapproved transfers with all generic and with most country-code extensions. It can be obtained only by the domain owner and is issued by the present domain name registrar company. It must be given to the new domain name registrar company because the transfer process cannot be initiated without it. The code is case-sensitive and frequently includes numbers and special characters, so as to stop unauthorized persons from deciphering it. Some companies even change the codes of domains registered through them after a particular interval of time for even better security.