If you decide to transfer a domain name from one domain name registrar to another, you will need to pass through a few security procedures. One of them is obtaining a unique EPP authentication code from the present registrar – on the condition that you are the domain registrant, since the code is emailed to the owner's mailbox and no one else can obtain it. You need to give this code to the new registrar company, otherwise they will not be able to initiate the transfer procedure. The EPP authorization codes are case-sensitive and may contain numbers or special symbols such as dots or commas, which can be easily misentered, so make sure you copy and paste the right code. As an additional security measure, the transfer authorization code for a domain may be changed on a regular basis. Certain domain name registrars refer to this code as a domain password, a domain secret or an Auth key as well.