U.S. A2P 10DLC Messaging Registration Mandatory

What do you need to know?

• All SMS and MMS messages to U.S. phone numbers using 10DLC phone numbers must go through a registered A2P campaign.
• Setting up new phone numbers or messaging campaigns will require additional time for data collection, submission, processing, and third-party approval.
• If you send messages using unregistered phone numbers, Phone providers will gradually increase message blocking, leading to a full block after August 31, 2023.
• Blocked messages will receive error code 30034 for unregistered 10DLC messages.
• Unregistered Messaging rates will still apply, even for blocked messages.
• To check your phone numbers' A2P 10DLC registration status, go to Settings > Phone Numbers > Trust Center.

Why is this happening?

• There will be a gradual increase in message blocking to allow customers to transition to registered A2P campaigns before the Phone providers fully block unregistered messages on August 31, 2023.
• U.S. A2P 10DLC registration is required by major U.S. telecommunications carriers to establish a fully-verified messaging ecosystem.

What do you need to do?

• If you already use registered A2P campaigns for all your U.S. messaging, no further action is needed.
• If you rely on provisioning new 10DLC phone numbers to send messages to U.S. recipients, associate those numbers with an approved A2P campaign or initiate a new A2P campaign registration.
• Note that A2P campaign registration takes time and requires cooperation with third parties for carrier approval. Check out A2P 10DLC Campaign Approval Best Practices.