[U.S. A2P 10DLC] Twilio now supports a fully verified messaging ecosystem!

Effective September 1st., 2023, all SMS and MMS messages sent to U.S. phone numbers using +1 10DLC phone numbers must be sent via an approved application-to-person (A2P) campaign. Messages sent to the U.S. using unregistered +1 10DLC numbers will be blocked. Blocked messages will return error code 30034, “US A2P 10DLC - Message from an Unregistered Number”. Twilio messaging rates will still apply, even for blocked messages.

Please register your +1 10DLC numbers as soon as possible to avoid the impact. You may learn more about the registration process from the Twilio website, and register via the Twilio Console or APIs.

If you have questions around how the shutdown of unregistered 10DLC messaging may affect your experience, please check out these Frequently Asked Questions. For more general information about the A2P 10DLC product, please visit the Twilio website.