Skip to main content
A2P (Application-to-Person) 10DLC registration is required for businesses that send text messages to contacts in the United States. Without registration, your SMS messages may be blocked or filtered as spam. This lesson walks through the full registration process inside the HoopAI Platform.
All customers must opt in to receive texts or calls from your business before you send messages to them. This is a legal requirement for A2P messaging compliance.

​
How to complete A2P 10DLC registration

1

Ensure your business profile is complete

Before starting registration, confirm that your Business Profile is fully filled out with your legal business name, business address, EIN (Employer Identification Number), and authorized representative details.Go to Settings > Business Profile to review and complete this information.
2

Navigate to the Trust Center

In the left sidebar, go to Settings > Phone Numbers > Trust Center (sometimes located under Compliance).
3

Register your brand

Click Register Brand. Enter your business information:
  • Legal business name
  • Business EIN or tax ID
  • Business type and industry
  • Website URL
  • Business address
Submit the brand registration and wait for approval (typically a few minutes to a few hours).
4

Create a campaign use case

Once your brand is approved, click Add Campaign. Describe how you will use SMS:
  • Select the appropriate use case (e.g., Marketing, Customer Care, Mixed)
  • Write a clear description of the types of messages you send
  • Add sample messages (at least 2) that represent typical outgoing SMS
Accurate and detailed descriptions improve approval chances and reduce delays.
5

Wait for campaign approval

Campaign approval can take anywhere from a few hours to several business days depending on the use case. You will be notified when the campaign is approved.
6

Purchase a phone number linked to your brand

After registration is approved, ensure your purchased phone number is associated with your registered brand and campaign. This links your number to your approved registration for compliant sending.
7

Enable Shaken/STIR for voice calls (optional)

For voice calls, enable Shaken/STIR Trusted Calling to validate your caller ID and reduce the chance of calls being labeled as spam. This is configured in the phone number settings.

​
Key points

A2P 10DLC (Application-to-Person 10-Digit Long Code) is a framework established by US carriers that requires businesses to register their brand and campaign before sending text messages. It improves deliverability and reduces carrier filtering of legitimate business messages.
You need your legal business name, EIN or tax identification number, business type (LLC, sole proprietor, etc.), website URL, authorized representative contact information, and sample SMS message content.
Brand registration is typically approved within minutes to a few hours. Campaign approval takes longer — usually 1 to 5 business days. Plan ahead and complete this before launching any SMS campaigns.
Without A2P registration, SMS messages sent through 10-digit long codes may be filtered or blocked by carriers, resulting in failed deliveries and compliance violations.

​
Key benefits

  • Improved delivery rates: Registered campaigns experience significantly fewer carrier filters and blocks.
  • Reliable communication channel: Establishes a legitimate, compliant communication channel with your contacts.
  • Compliance: Ensures your business meets all US regulatory requirements for A2P messaging.
  • Trust with your audience: Compliant, registered messages build credibility with your contacts.
  • Call protection: Shaken/STIR validation for voice calls prevents your number from appearing as spam to recipients.
Last modified on March 4, 2026