Understanding A2P/10DLC: A Guide for Businesses

In the evolving landscape of business communication, compliance with messaging regulations is crucial. One such standard that businesses must adhere to is 10DLC (10-Digit Long Code), a system that ensures secure and regulated Application-to-Person (A2P) messaging. This blog will break down what 10DLC is, who regulates it, and why it’s essential for businesses engaging in text messaging.

What is 10DLC?

The Cellular Telecommunications Industry Association (CTIA), in collaboration with major wireless service providers, developed Messaging Principles and Best Practices to protect consumers from spam and unwanted messages. As part of this effort, the 10DLC system was introduced to regulate how businesses communicate with consumers via text messaging.

A 10-Digit Long Code (10DLC) is a local phone number sanctioned for A2P messaging, meaning businesses, organizations, and other entities must use it to send messages to consumers. Any messaging from a business to a consumer falls under A2P classification and requires compliance with 10DLC guidelines.

Why Does 10DLC Matter?

  • Regulates Business Messaging: Ensures compliance and prevents spam.
  • Protects Consumers: Reduces robo-texts and unwanted marketing messages.
  • Avoids Carrier Penalties: Businesses must register to avoid hefty fines.

Who Regulates 10DLC?

Since 2020, major Mobile Network Operators (MNOs) such as Verizon, AT&T, and T-Mobile have launched their own 10DLC compliance programs. Unlike some other messaging mandates regulated by the FCC, 10DLC compliance is directly managed by mobile carriers.

To oversee this process, carriers have designated The Campaign Registry (TCR) as the official third-party hub responsible for registering brands and messaging campaigns. Since November 1, 2021, businesses must register for 10DLC to avoid penalties.

10DLC Terminologies You Should Know

Understanding the key terms related to 10DLC can help businesses navigate the process more smoothly:

  • 10DLC (10-Digit Long Code): A local number approved for business messaging.
  • Brand: The company or organization sending messages.
  • Campaign: The intended goal or purpose behind business messaging.
  • The Campaign Registry (TCR): The official platform where businesses must register their messaging campaigns.
  • Direct Connect Aggregator (DCA): Companies that connect directly to MNOs to send messages on behalf of businesses.

FAQs About 10DLC

Q: I don’t run marketing “campaigns.” Why do I need to register?

A: In the context of 10DLC, a “campaign” simply refers to any reason a business has for messaging consumers, not just marketing.

Q: Does 10DLC apply to all phone numbers?

A: Yes, it applies to all DIDs (Direct Inward Dialing Numbers) used for SMS/MMS. However, Toll-Free numbers follow a separate verification process.

Q: What if my business needs more than 49 SMS-enabled numbers?

A: Businesses with high-volume messaging needs can:

  • Create separate campaigns per department, location, or use case.
  • Assess the necessity of multiple numbers and adjust usage accordingly.

Q: Why does campaign approval take so long?

A: The manual review process, combined with delays from providers and increased compliance requirements, has led to longer registration times.

Q: Why do I need a Privacy Policy for 10DLC registration?

A: 10DLC guidelines require businesses to have a clear and accessible Privacy Policy that confirms they do not sell, share, or rent SMS data to third parties.

Final Thoughts

If your business uses SMS messaging to engage with consumers, 10DLC compliance is no longer optional—it’s mandatory. By registering with The Campaign Registry (TCR) and following the guidelines set by mobile carriers, businesses can avoid fines while ensuring secure, regulated, and trusted communication with customers.

For a seamless 10DLC registration process, ensure that your business:

✅ Registers its Brand & Campaign with TCR
✅ Has a clear campaign purpose
✅ Maintains a privacy policy
✅ Follows compliance guidelines

Staying compliant not only helps you avoid penalties but also enhances the credibility and reliability of your business messaging. Contact us today.