Error 21216

Product: Programmable Voice

ERROR - 21216

API: Call blocked by Twilio blocklist

The destination number is blocked by Twilio because it either has a high-risk of fraud or, for regulatory reasons, cannot be enabled by default.

If you have a legitimate need to call this number, please email help@twilio.com with an explanation of your use case.

Possible Causes

The phone number dialed is on the Twilio blocklist

Possible Solutions

Change the number dialed or reach out to Twilio for an exception