Please follow the below steps to transfer your domain registration service to us.
1) You have to change your domain admin contact email id as your personal email id becuase your domain admin contact email address will receive an domain approval emal and you need to approve those email to start this transfer process.
2) You have to unlock your domain name at your current registrar and ask them to provide EPP code
3) You have to provide the authorization code to us and you will get the EPP code from your current registrar.
You need to contact your current domain registrar to do all the changes which we mentioned above.
You can check the current registrar from the below link
You can place the order for domain transfer at the below link once you check all the above steps
Note : Normally the total domain transfer process takes nearly 7-10 days.