Twilio A2P 10DLC Registration: A Complete Step-by-Step Guide

If you send SMS messages for business purposes in the U.S., you’ve probably heard of A2P 10DLC registration. With new regulations in place, companies must register their Application-to-Person (A2P) 10-digit long code (10DLC) numbers to ensure better message deliverability and compliance.

If you're using Twilio for messaging, this process is crucial. In this guide, we’ll break down Twilio A2P 10DLC registration, why it’s important, and how to complete it step by step.

What is A2P 10DLC?

A2P 10DLC is a system designed by U.S. mobile carriers to regulate business text messaging on local 10-digit phone numbers. It helps reduce spam and improves SMS deliverability for legitimate businesses.

🔹 A2P (Application-to-Person) refers to automated text messages sent from a business to customers.
🔹 10DLC (10-Digit Long Code) is a standard phone number format used for sending SMS.

With A2P 10DLC registration, businesses using Twilio or other messaging providers must register their brand and campaigns to comply with carrier rules.

For more details on A2P 10DLC, check out Twilio’s official guide.

Why Do You Need to Register A2P 10DLC?

If you don’t register your 10DLC number, you may face higher message filtering, additional fees, or even blocked messages by carriers like AT&T and T-Mobile.

Benefits of A2P 10DLC Registration

✔️ Higher Deliverability – Registered numbers are less likely to be flagged as spam.
✔️ Lower Fees – Unregistered numbers face higher carrier fees.
✔️ Compliance with U.S. Regulations – Avoid message blocks and ensure legal compliance.
✔️ Better Customer Experience – Deliver messages reliably without unnecessary filtering.

Carriers are now enforcing strict SMS regulations, so businesses using Twilio A2P 10DLC must register to keep their messages flowing smoothly.

Read CTIA’s messaging principles for more insights into compliance.

How to Register Twilio A2P 10DLC? (Step-by-Step Guide)

Step 1: Gather Required Information

Before you start Twilio A2P 10DLC registration, make sure you have:

✅ Business Name – The official name of your company.
✅ Business Type – Whether you're a sole proprietorship, LLC, or corporation.
✅ Tax ID / EIN – Required for larger businesses (not needed for sole proprietors).
✅ Website / Social Media – To verify legitimacy.
✅ Campaign Use Case – Explain how you will use SMS (e.g., marketing, customer support).

Having this info ready will make the registration process faster.

Step 2: Register Your Brand on Twilio

1. Log in to your Twilio account (Twilio Console).

2. Navigate to Messaging > Regulatory Compliance.

3. Click A2P 10DLC Registration.

4. Select Register a New Brand and enter your business details.

Twilio will verify your brand, and approval typically takes a few minutes to a few days.

Step 3: Register Your Campaigns

Once your brand is verified:

1. Go to Messaging > Campaigns in Twilio.

2. Click Create a New Campaign.

3. Choose your Campaign Type (e.g., promotional, transactional, customer care).

4. Add sample messages you plan to send.

5. Submit your campaign for carrier approval.

💡 Tip: Avoid using excessive capitalization, spammy language, or misleading offers in your SMS messages, as this may lead to rejection.

Step 4: Assign Numbers to Your Campaign

After your campaign is approved:

1. Navigate to Phone Numbers in Twilio.

2. Assign your 10DLC numbers to the registered campaign.

3. Save the changes and start sending compliant SMS messages.

Congratulations! 🎉 Your Twilio A2P 10DLC registration is now complete.

For a detailed walkthrough, refer to Twilio’s registration guide.

Common Issues and How to Fix Them

If you experience issues, reach out to Twilio Support.

Twilio A2P 10DLC Registration Fees

Carriers charge registration fees based on your business size and campaign type. Here’s an overview of Twilio A2P 10DLC pricing:

For up-to-date pricing, check Twilio’s SMS pricing page.

Final Thoughts: Is Twilio A2P 10DLC Registration Worth It?

Absolutely! If you send SMS messages in the U.S., A2P 10DLC registration is essential for:
✔️ Ensuring high message delivery rates
✔️ Avoiding carrier fines and penalties
✔️ Providing a better experience for customers

By registering your brand and campaigns on Twilio, you protect your business from unnecessary disruptions and keep your messaging system compliant.

🚀 Ready to register? Start now by visiting the Twilio A2P 10DLC registration portal.