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Updated Messaging Policies for Canadian 10DLC Numbers: A2P Registration Requirements

To keep up with industry standards, we're updating our messaging policies for Canadian 10-digit long code (10DLC) numbers. These changes affect messages sent from Canadian numbers to recipients in both the United States and Canada.

Key Changes​

Messaging from Canada to the United States​

Effective immediately, all messages sent from Canadian 10DLC numbers to U.S. recipients must come from Application-to-Person (A2P) registered numbers. This applies to both new and existing Canadian numbers.

Messaging within Canada​

  • For New Canadian 10DLC Numbers: Any numbers purchased after March 26, 2025, must be A2P registered to send messages to Canadian recipients.
  • For Existing Canadian 10DLC Numbers: There is no requirement for A2P registration at this time, except as noted for messaging to the U.S.

Important Notes​

  • These updates are specific to 10DLC numbers. Toll-Free (TF) numbers are not affected and will continue to operate under existing guidelines.

Understanding A2P 10DLC Registration​

A2P 10DLC allows businesses to send Application-to-Person type messages using standard 10-digit long code phone numbers. Registering your numbers under this system ensures compliance with carrier regulations and improves message deliverability.

For a comprehensive overview and answers to common questions, please refer to our support article.

Action Steps​

For Existing Canadian 10DLC Numbers Messaging to the U.S.​

If your number is not A2P registered yet, please start the registration process promptly to comply with the new requirements.

For New Canadian 10DLC Numbers​

Ensure A2P registration is completed before you begin messaging recipients in either the U.S. or Canada.

For Toll-Free Numbers​

No action is required; existing policies remain in effect.

How to Register​

To register your Canadian 10DLC numbers for A2P messaging, follow the step-by-step instructions in our Campaign Registration Guide. This guide provides detailed information on the registration process, including best practices to ensure approval.

Support​

We understand these changes might prompt questions or require adjustments to your current messaging practices. Our support team is here to help you through this transition.

Thank you for your attention to these updates and for your continued trust in Stack.