A2P 10DLC Deep Dive: The Compliance Framework Every SMS Marketer Must Understand

What is A2P 10DLC?

A2P 10DLC (Application-to-Person 10-Digit Long Code) is the regulatory framework for business text messaging in the United States. It requires businesses to register their brand and campaigns with The Campaign Registry (TCR) before sending SMS messages through standard 10-digit phone numbers.

Before 10DLC, businesses often sent SMS through unregistered numbers, leading to spam problems. 10DLC creates accountability: every business SMS traces back to a registered entity. Carriers now filter unregistered traffic aggressively.

The Two-Step Registration Process

Step 1: Brand Registration

Register your business entity with TCR. Required information includes:

• Legal business name and DBA
• EIN (Tax ID)
• Business address
• Business type and vertical
• Company size and stock status
• Website URL

Brand registration establishes your identity in the messaging ecosystem. Your brand receives a Trust Score based on business verification.

Step 2: Campaign Registration

Register each messaging campaign separately. Campaign details include:

• Campaign use case (marketing, notifications, customer care, etc.)
• Sample messages
• How consent is collected
• Opt-out keywords and handling
• Help keywords and responses
• Expected message volume

Understanding Trust Scores

Your Trust Score determines messaging throughput—how many messages you can send per second. Trust Scores range from low to high based on:

• Business verification completeness
• Business size and history
• Campaign type and content
• Historical messaging behavior

Higher Trust Scores mean higher throughput. Low-trust campaigns may only send 1 message per second. High-trust campaigns can send 100+ messages per second.

Common 10DLC Pitfalls

Mismatched Use Cases: Registering as "informational" but sending marketing creates problems

Inadequate Consent Documentation: Carriers may request proof of consent

Content Drift: Sending content that doesn't match registered samples

Missing Opt-Out Handling: Failing to process opt-outs immediately

Volume Spikes: Sudden volume increases trigger carrier scrutiny

Moklo's 10DLC Management

Moklo handles 10DLC complexity:

• Guided registration workflow
• Automatic throughput management within limits
• Content compliance checking against registered samples
• Immediate opt-out processing
• Trust Score monitoring and optimization guidance

Conclusion

A2P 10DLC compliance is non-negotiable for SMS marketing. Unregistered traffic gets filtered; non-compliant campaigns get suspended. Understanding brand registration, campaign registration, and Trust Scores is essential. Moklo manages 10DLC requirements so you can focus on campaigns, not carrier relations. Get compliant SMS infrastructure at getmoklo.com.