If you want to transfer a domain from one registrar company to another, you will need a unique code, which may be called by multiple names – an EPP authorization code, an Auth code, a domain name password, and so on. All these names refer to one and the same thing – a code that the domain name owner receives from the current registrar and provides to the new one at the time of the order. Without a valid code, a domain transfer cannot be initiated and this is one of the safety measures against unsanctioned transfer attempts used with all generic and with most country-code extensions. For better safety, the code includes digits and/or special characters and is case-sensitive, so if you want to transfer one of your domains, you need to provide the new registrar company with the right code.