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Country Summary

Country nameUnited States
ISO codeUS
RegionNorth America
Dialing code+1


Portable Numbers
  • Mobile numbers
  • Geographic (local) numbers
  • Non-geographic (national) numbers
  • Toll-free numbers
  • VoIP numbers
  • Most numbers are portable. In rare cases, Twilio may not have geographic coverage for that number and won’t be able to port it.  
  • Most mobile operators require account numbers and PINs to port; some providers also require account PINs to port out. Before porting check with your current provider whether a PIN is required and iclude it in your port request.
Required Information
  • Letter of Authorization (LOA)
  • Name and address that matches the Customer Service Record (CSR)
  • Copy of a phone bill dated within the last 30 days
  • Current provider’s account number
  • PIN, if required

Once you submit all required information, 2 - 4 weeks for standard ports (fewer than 50 numbers), barring rejections from your current service provider.  

For bulk ports (more than 50 numbers), 4 - 6 weeks, barring rejections from your current service provider.

Regulatory Bodies

The Federal Communications Commission (FCC)

Other Details

The most common reason for a rejected port is incorrect name and/or address information. To ensure you have the correct information, ask your current service provider for the address and name on your Customer Service Record (CSR). 

How To Submit

Submit your request directly via the Twilio Console

The maximum amount of numbers per port is 1000.

For the benefit of all our customers, these guidelines are provided to help you comply with applicable requirements and to help ensure Twilio's platform remains compliant with global telecommunications ecosystem requirements. These guidelines represent our current understanding of common compliance requirements generally applicable to Twilio and its customers, and do not constitute legal advice. By posting these guidelines, Twilio makes no assurances regarding the legal compliance of your application built using our APIs. You are expected to understand and abide by all compliance obligations applicable to your specific application. You should check these pages regularly for updates as telecommunications ecosystem requirements continue to evolve and change, and the information below may be updated or changed without notice.