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- i.e. a number you had a while back but is no longer active on your current account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