If you decide to transfer a domain name from one registrar to another, you will have to pass through a couple of security procedures. One of them is obtaining a unique EPP authentication code from the current registrar company – as long as you are the domain registrant, since the code is sent to the domain owner’s email address and no one else can obtain it. You have to give this code to the new domain registrar, otherwise they won’t be able to start the transfer. The EPP authentication codes are case-sensitive and may comprise of numbers or special symbols such as dots or commas, which can be easily misentered, so make sure you copy & paste the right code. As an extra protection measure, the transfer authorization code for a domain may be reset on a regular basis. Certain domain name registrars refer to this code as an Auth key, a domain password or a domain secret as well.