10DLC (10-Digit Long Code) is the system for registering standard phone numbers for A2P (business) messaging. Registration involves brand verification and campaign approval to reduce spam and improve deliverability. Unregistered numbers face severe filtering.
Why 10DLC Exists
Before 10DLC, businesses used long codes for A2P messaging without oversight, leading to spam. Carriers now require registration to:
- Verify business identity
- Approve messaging use cases
- Assign appropriate throughput
10DLC Requirements
- Brand registration — Business information
- Campaign registration — Messaging use case
- Sample messages — Examples of content