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Voice Insights now shows why carriers block your calls

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Twilio·Oct 1, 2026, 07:00 AMFeatureAI-assisted summary

Summary

Voice Insights now displays the carrier block reason header and identifies the network that blocked the call.
Provides direct contact information (URL, phone, email) for redress in the Call Summary, Console, API, and Event Streams.
Advises verifying STIR/SHAKEN signing and Voice Integrity registration when seeing many 603 responses.

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Official source Last checked Oct 5, 2026, 5:04 PM

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