If you decide to transfer a domain from one registrar company to another, you’ll need to go through a few safety steps. One of them is obtaining a special EPP authentication code from the current domain registrar – on the condition that you are the domain registrant, since the code is sent to the owner's mailbox and no one else can see it. You’ll have to give this code to the new registrar company, otherwise they won’t be able to initiate the domain transfer process. The EPP codes are case-sensitive and may include numbers 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 safety measure, the transfer authorization code for a domain may be altered regularly. Certain companies refer to this code as an Auth key, a domain secret or a domain password as well.