If you want to transfer a domain from one company to another, you will need to pass through a couple of safety steps. One of them is getting a unique EPP authorization code from the present registrar – as long as you are the domain registrant, since the code is emailed to the owner's email address and nobody else can get it. You’ll need to give this code to the new registrar, or else they will not be able to start the domain transfer process. The EPP codes are case-sensitive and may include digits or special symbols such as commas or dots, which can be easily miswritten, so make sure you copy/paste the right code. As an additional security measure, the transfer code for a domain name may be changed on a regular basis. Certain domain name registrars call this code a domain secret, a domain password or an Auth key as well.