Numbers that cannot be ported into Sideline

If you attempt to port in a number(s) that we do not accept, you are likely to receive the in-app error "please contact customer support for this number."

The following number 'types' are not accepted for porting into Sideline and thus cannot be used as your Sideline number:

1. International numbers 
2. Phone numbers from the non-contiguous United States
   • Hawaii, Alaska, and Puerto Rico area codes 
3. Toll-free & 1-800 numbers
4. "Old numbers" on an account
   • i.e. a number you had a while back but is no longer active on your current account
5. Your registered phone number
   • i.e. the number you used when registering for a Sideline account
6. Off-Net rate center numbers*

*Rate Center Numbers - All phone numbers are registered to what is called a rate center. Numbers have a physical location and belong to specific rate centers and cannot move from them. When you port from one service to another (Sprint to AT&T for example), the number still belongs to the same rate center, it simply moves from one account to the next. However, in order to port a number, the gaining carrier (us for example) will have to have a relationship with the rate center that the number belongs to. 

Further questions? Submit a request.