If you would like to transfer a domain from one company to another, you will have to go through a couple of security steps. One of them is getting a unique EPP authentication code from the current registrar – provided that you are the registrant, since the code is sent to the domain owner’s email address and no one else can get it. You need to provide this code to the new domain name registrar, otherwise they won’t be able to start the domain name transfer. The EPP authentication codes are case-sensitive and may include numbers or special symbols such as commas or dots, which can be easily mistyped, so make sure you copy and paste the right code. As an extra protection measure, the transfer authorization code for a domain may be altered regularly. Certain registrar companies call this code a domain secret, an Auth key or a domain password as well.