Adding Your Domains to Dub by Copying and Pasting
Click on the option "I would like to copy & paste (or type) my domains to import" in the "Add domains" pop-up dialogue and you will see a new dialogue as displayed in the screenshot 1 below.
Screenshot 1. Dialogue for adding domains by copying and pasting them
On this dialogue, you can either type your domains one by one or copy and paste all the domains you want to add. Each domain should be on its own each line, or you can also separate domains by comma ",".
Click "submit" and Dub will take you back to the "My Domains" page with your newly added domains listed.
Next : Add domains by uploading a file