10DLC Overview

10DLC Compliance

10DLC (10-Digit Long Code) is the industry standard for Application-to-Person (A2P) messaging in the United States. All businesses sending SMS to US phone numbers must register their brand and messaging campaigns.

Why 10DLC?

US carriers (AT&T, T-Mobile, Verizon) require 10DLC registration to:

Reduce spam - Verify legitimate business senders
Improve deliverability - Registered traffic gets priority routing
Increase throughput - Higher message limits for trusted senders
Ensure compliance - Meet TCPA and carrier requirements

Registration Process

10DLC registration consists of two steps:

Code
┌─────────────────┐    ┌─────────────────┐    ┌─────────────────┐
│  1. Register    │ →  │  2. Register    │ →  │  3. Assign      │
│     Brand       │    │     Campaign    │    │     Numbers     │
└─────────────────┘    └─────────────────┘    └─────────────────┘
   $4 one-time         $15 one-time          Ready to send!
     1-3 days           + $10/month
                         1-7 days

Step 1: Brand Registration

Your Brand represents your business entity. You provide company information like legal name, EIN/Tax ID, address, and website. This is reviewed by The Campaign Registry (TCR).

Step 2: Campaign Registration

A Campaign describes your messaging use case. You specify the type of messages (2FA, marketing, notifications), provide sample messages, and confirm compliance settings.

Step 3: Phone Number Assignment

Once your campaign is approved, assign your US phone numbers to it. Messages sent from these numbers will be delivered as registered A2P traffic.

Costs

Item	Cost	Type
Brand Registration	$4	One-time, per brand, charged when you submit it
Campaign Registration	$15 ($2 for `LOW_VOLUME`)	One-time, charged when you submit the campaign
Campaign Monthly Fee	$10/month ($2 for `LOW_VOLUME`)	Recurring, while the campaign is approved

Throughput Limits

Your messaging throughput depends on your Trust Score, assigned by TCR based on your brand vetting:

Trust Score	Daily Limit	Messages/Second
Low	2,000	0.2
Medium	10,000	1
High	200,000	10+

Prerequisites

Before starting 10DLC registration, you need:

Approved Business Verification (KYB) - Carriers register a brand against a vetted legal entity, so this is a hard prerequisite: submitting a brand or a campaign without it returns 403 kyb_required. Complete it at Compliance → Verification
US phone number - At least one number to assign to your campaign
Business information - Legal name, EIN, address, website

Next Steps

Start with brand registration

Create a Campaign

Set up your messaging campaign

API Reference

Manage 10DLC brands and campaigns programmatically:

Get a 10DLC brand — retrieve brand registration details
Update a 10DLC brand — modify a draft brand before submission
Delete a 10DLC brand — remove a brand from your account
Get a 10DLC campaign — retrieve campaign details and status
Delete a 10DLC campaign — remove a campaign you no longer use