If you decide to transfer a domain name from one registrar to another, you will need to pass through a few security procedures. One of them is obtaining a special EPP authentication code from the current domain registrar – as long as you are the domain registrant, since the code is sent to the owner's mailbox and nobody else can get it. You’ll need to give this code to the new domain registrar, otherwise they will not be able to initiate the domain transfer. The EPP codes are case-sensitive and may include digits or special characters such as commas or dots, which can be easily miswritten, so make sure you copy & paste the correct code. As an additional safety measure, the transfer code for a domain may be reset on a regular basis. Certain registrar companies refer to this code as an Auth key, a domain password or a domain secret as well.