Transferring a domain from one company to another ordinarily involves the use of a special domain name authorization code, which different companies call an EPP key, a domain name password or an Auth-Info code. This code can be used as a protection mechanism against unwanted transfer attempts with all generic and with most country-code extensions. The code can be obtained only by the domain name registrant and is provided by the present domain name registrar company. It must be given to the new domain registrar company because the transfer cannot be started without it. The code is case-sensitive and typically comprises of numbers and special characters, so as to hinder unauthenticated people from breaking it. Certain domain registrars even change the codes of domains registered through them from time to time for greater safety.