If you’d like to transfer a domain name from one company to another, you will have to go through a couple of security procedures. One of them is obtaining a special EPP authentication code from the current registrar company – provided that you are the domain registrant, since the code is emailed to the owner's email and no one else can get it. You will need to provide this code to the new registrar company, or else they will not be able to initiate the transfer procedure. 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 and paste the correct code. As an extra safety measure, the transfer authorization code for a domain may be altered regularly. Certain domain registrars refer to this code as an Auth key, a domain password or a domain secret as well.