A2P 10DLC registration is required for businesses sending application-generated SMS or MMS to U.S. recipients using 10-digit local phone numbers.
The registration process gives mobile carriers information about who is sending the messages, what the messages are about, and how recipients have opted in to receive them. This helps carriers distinguish legitimate business messaging from unwanted or abusive traffic.
Why Do Carriers Require 10DLC Registration?
Reduce Spam and Unwanted Messages
Business messaging sent through applications can be used at scale, making it important for carriers to identify legitimate senders and prevent spam, fraud, and other unwanted traffic.
Registration provides carriers with information about the business and its messaging use case, helping them manage traffic and protect mobile users.
Verify Business and Messaging Use Cases
Registration helps establish:
Who is sending the messages
What the messages are used for
How recipients provide consent
How recipients can opt out or request help
This creates greater transparency between businesses, carriers, and recipients.
Meet U.S. Carrier Requirements
10DLC registration is part of the carrier requirements for application-to-person messaging over U.S. 10-digit local numbers.
Businesses must register their Brand and Campaign before sending this type of traffic.
How Does Registration Affect Message Delivery?
Carriers use filtering systems to identify spam, fraud, and other unwanted messages. They may also filter application-to-person traffic that has not been properly registered.
Registering your messaging traffic provides carriers with information about your business and messaging use case, which can help reduce filtering of compliant messages. However, registration does not guarantee delivery. Message content, recipient consent, sending behavior, and other carrier requirements can still affect whether a message is delivered.