SUPPORT.TWILIO.COM END OF LIFE NOTICE: This site, support.twilio.com, is scheduled to go End of Life on February 27, 2024. All Twilio Support content has been migrated to help.twilio.com, where you can continue to find helpful Support articles, API docs, and Twilio blog content, and escalate your issues to our Support team. We encourage you to update your bookmarks and begin using the new site today for all your Twilio Support needs.

US and Canada Termination Zones for Elastic SIP Trunking

Elastic SIP Trunking calls to US and Canadian destinations are billed by zones. Here's a breakdown of how it works:

  • Zone Definition: Each zone represents a collection of area codes and prefixes (NPA-NXX) where we charge the same rate. This segmentation allows Twilio to offer more competitive rates for each zone.
  • Zone 1: The vast majority of calls, well over 90% of Twilio’s overall calls, fall into Zone 1. This zone includes the most common area codes and prefixes.

By segmenting destinations into zones, Twilio ensures that customers receive competitive pricing tailored to their specific calling needs.

Have more questions? Submit a request
Powered by Zendesk