Transferring a domain from one registrar company to another usually entails the use of a special domain name authorization code, which different companies call an EPP authentication code, a domain password or an AuthInfo code. This code can be used as a security mechanism against unauthorized 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 provided by the present 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 typically contains numbers and special characters, so as to obstruct unauthorized individuals from deciphering it. Certain registrar companies even alter the codes of domains registered through them after a certain period of time for better safety.