If you wish to transfer a domain from one domain name registrar to another, you’ll need to go through several security steps. One of them is obtaining a unique EPP code from the current registrar – provided that you are the domain registrant, since the code is sent to the domain owner’s mailbox and nobody else can get it. You’ll need to give this code to the new registrar company, or else they will not be able to start the domain name transfer procedure. The EPP codes are case-sensitive and may include numbers or special characters such as commas or dots, which can be easily misentered, so make sure you copy/paste the correct code. As an additional safety measure, the transfer authorization code for a domain may be changed regularly. Certain companies refer to this code as an Auth key, a domain password or a domain secret as well.