Twilio Changelog | Aug. 09, 2023

ACTION REQUIRED: Twilio Voice Media IP Migration Schedule and Testing Availability

Effective October 10, 2023, Twilio will migrate the public media IPs and port ranges for Elastic SIP Trunking calls, Programmable SIP calls, Voice SDK calls, Flex calls, and SIPREC sessions in all regions. 

We’re moving from a per-region IP range allocation to a single global range (, and we’re expanding the media port range from 10000-20000 to 10000-60000. We’re soft launching the new range as follows:

  • September 26, 2023: 1% of all calls will use the new range
  • October 5, 2023: 20% of all calls will use the new range 
  • October 10, 2023: 100% of all calls will use the new range

Impacted Edge locations include: Sydney (AU1), São Paulo (BR1), Dublin (IE1), Frankfurt (DE1), Tokyo (JP1), Singapore (SG1), Ashburn (US1), Umatilla (US2). After the migration, Voice SDK calls can select US2 for GLL edge location selection.

We’re providing testing capabilities and we’ll offer opt-in for production traffic before the migration begins; however, these testing capabilities are intended for non-production traffic only. 

Programmable Voice Flex Elastic SIP trunking