If you wish to transfer a domain from one company to another, you will have to pass through a couple of safety procedures. One of them is getting a unique EPP authorization code from the current domain registrar – as long as you are the registrant, since the code is sent to the owner's email and no one else can get it. You will need to provide this code to the new domain registrar, or else they won’t be able to initiate the domain name transfer. The EPP authentication codes are case-sensitive and may comprise of numbers or special symbols such as commas or dots, which can be easily misentered, so make sure you copy and paste the right code. As an additional safety measure, the transfer code for a domain may be changed regularly. Some registrars call this code a domain password, an Auth key or a domain secret as well.