Can I port a number out of Sideline that I didn’t originally port-in? Follow Yes, with an active (paid) Sideline subscription you can port a number out that you did not originally port in for a one-time port out fee of $19.99. For port-out instructions click here. Questions? submit a request. Related articles Port Out Steps Porting FAQs How to port your number into Sideline What information do I need to port my number out? Can I port my number out? Comments 0 comments Please sign in to leave a comment.