If you want to transfer a domain from one company to another, you will need a special code, which may be called by various names – an EPP authentication code, an Auth code, a domain password, and so on. All these names denote the exact same thing – a code that the domain name registrant gets from the present domain registrar and gives to the new one upon ordering. Without a valid code, a transfer procedure cannot be initiated and this is one of the security measures against unsolicited transfers used with all gTLD and with most ccTLD extensions. For better safety, the code includes digits and/or special characters and is case-sensitive, so in case you wish to transfer one of your domains, you have to provide the new registrar with the right code.