Transferring a domain name from one registrar company to another usually involves the use of a special domain name authorization code, which different companies call an EPP authorization code, a domain password or an Auth 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 owner of the particular domain and is issued by the current registrar company. It must be given to the new domain name registrar company because the transfer cannot be started without it. The code is case-sensitive and typically contains numbers and special symbols, so as to prevent unauthorized people from cracking it. Certain registrars even reset the codes of domain names registered through them after a particular amount of time for better security.