Notice: Twilio SIP and Client Voice Media IP Pool Expansion (September 2019)

In Fall 2019, Twilio will be expanding our Media IP address ranges for the following regional gateways:

  • AU1 (Asia Pacific - Sydney)
  • BR1 (South America - Sao Paulo)
  • DE1 (Europe - Frankfurt)
  • JP1 (Asia Pacific - Tokyo)
  • SG1 (Asia Pacific - Singapore)

These Media IP changes will affect all of our SIP Trunking, SIP Interface, and Client products, including the following:

  • Elastic SIP Trunking
  • Programmable Voice SIP Interfaces
  • Programmable Voice SDKs for iOS and Android
  • Twilio Client JS SDK

Users of these products MUST add the new Media IP ranges to their whitelist no later than Monday September 30, 2019 to avoid service disruption. Customers who do not whitelist these IPs may experience call audio issues.

New Media IP Ranges

The following IP ranges are being added for the corresponding regional gateway:

Region New IP Range CIDR Notation UDP Port Range
AU1 - 10,000 - 20,000
BR1 - 10,000 - 20,000
DE1 - 10,000 - 20,000
JP1 - 10,000 - 20,000
SG1 - 10,000 - 20,000

We recommend customers whitelist ALL of Twilio's signaling and media IP address ranges and ports on your firewall. This is important not only for users with phone numbers in different regions, but also for resiliency purposes.

For a full list of the existing regional IP ranges, as well as the newly announced expanded IP ranges, please see the following resources:


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