Transferring a domain name from one company to another normally entails the use of a special transfer code, which different companies call an EPP key, a domain name password or an AuthInfo code. This code can be used as a safety measure against unsanctioned transfer attempts with all generic and with most country-code extensions. The code can be obtained only by the owner of the specific domain and is issued by the current domain registrar company. It must be given to the new domain registrar company because the transfer cannot be initiated without it. The code is case-sensitive and typically comprises of numbers and special symbols, so as to stop unauthenticated persons from guessing it. Certain companies even change the codes of domain names registered through them after a particular period of time for better safety.