If you’d like to transfer a domain from one registrar company to another, you’ll need to pass through a few safety steps. One of them is obtaining a special EPP code from the present domain name registrar – on the condition that you are the domain registrant, since the code is emailed to the owner's mailbox and nobody else can obtain it. You have to give this code to the new registrar company, otherwise they won’t be able to begin the domain name transfer process. The EPP authentication 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 and paste the correct code. As an extra safety measure, the transfer authorization code for a domain may be changed regularly. Some registrar companies refer to this code as an Auth key, a domain password or a domain secret as well.