Who needs to register A2P 10DLC?

All organizations using Aircall numbers to send SMS messages to U.S. recipients must register. Carriers classify all SMS sent through business platforms as A2P traffic.If you only send SMS outside of the U.S., no action is required. If you don’t register:

  • Carriers will filter or block your SMS traffic.
  • You will be charged higher per-message fees.

Can trial accounts register for A2P 10DLC?

No. Trial accounts cannot register due to associated costs.

What is The Campaign Registry (TCR)?

The Campaign Registry (TCR) is the official body that verifies and registers Application-to-Person (A2P) 10-Digit Long Code (10DLC) text messaging campaigns in the U.S. for brands and messaging providers.

How does the registration process work?

The process has three steps:

1- Brand and campaign registration:

  • Provide official company details (matching your EIN listing for U.S. companies).
  • Describe the type of messages you plan to send by registering a campaign.

2 - Carrier vetting: Carriers review your campaign to validate it. This can take 5–30 business days.

3 - Number association: Link your Aircall numbers to the approved campaign. Numbers are only registered once this step is complete: your campaign is active.

How does Aircall help with registration?

Aircall manages the registration with the TCR on your behalf. Aircall will update your support ticket at each stage, and you will receive a notification by email. You only need to:

  • Fill out the registration form in your Aircall Dashboard. Here is an article A2P 10DLC: Submitting your registration to walk you through all the steps.
  • Monitor your status campaign (A2P 10DLC Registration statuses) and remain responsive to our follow-ups in the event your registration was not approved and needs to be edited.

How long does registration take?

  • Brand & campaign registration: usually within one business day.
  • Carrier vetting: 5–30 business days.
  • Number association: typically one business day after vetting.

Why does the A2P registration take so much time?

A2P registration isn’t handled by just one entity. It goes through:

  • The Campaign Registry (TCR) → validates the brand first
  • Each individual U.S. carrier (AT&T, T-Mobile, Verizon, etc.) → reviews the campaign

Because every carrier has its own compliance team, workload, and approval criteria, the total time depends on the slowest carrier in the lineup.

Processing times vary and typically take 5–30 business days. We submit everything right away, but the final approval timeline depends entirely on the carriers’ internal review queues.

Can I edit or delete my Campaign?

Currently, there is no self-service way to delete a campaign or edit a campaign. In case, you need assistance with these two actions, reach out to our Customer Support team.

How much does registration cost?

The following fees apply to A2P 10DLC registration:

  • $4.50 one-time fee for brand registration for Low Volume and Sole Proprietor brands
  • $46 one-time fee for brand registration for Standard brands
  • $15 fee for each vetting attempt
  • A recurring monthly fee depending on the selected campaign type
    • $2/month for Sole Proprietorship use case
    • $10/month for a single declared use case
    • $1.50/month for low-volume use case

Are my numbers active while registration is pending?

No. Numbers only become registered once the entire process is completed.

What if I’m porting my numbers into Aircall?

If you are porting numbers into Aircall, you can submit the A2P 10DLC registration prior to port completion. However, ported numbers cannot be added to fully approved A2P registrations until three business days after the port has completed. This allows ample time for the SMS routing to fully update after port completion.

Do Toll-Free numbers require A2P 10DLC registration?

No. A2P 10DLC applies only to standard 10-digit long code numbers. Toll-Free numbers do follow a separate compliance process if you want to send SMS: Messaging Compliance for Toll-Free US/Canada Numbers.

What if I use an external SMS partner like Heymarket, Sakari, or Textline?

You must contact your SMS partner directly. They are responsible for initiating registration.

What if I have multiple SMS use cases?

You have two options:

  • Mixed/low volume campaign: Register one campaign and include sub-use cases.
  • Separate campaigns per use case: Register distinct campaigns (e.g., Customer Care, Marketing)

Can I submit multiple brands/registrations?

Yes! Simply create a new campaign following the same steps with the new brand and registration information.

Can I submit the same number for multiple campaigns?

No! One number per A2P campaign.

What are the most common rejection reasons?

The most common rejection reasons are:

  • Inaccurate or unverifiable opt-in process
  • Inaccurate or invalid brand information
  • Inaccurate or invalid use case description
  • Vague or incomplete sample messages

How can I confirm the correct use case for my campaign?

You can refer to this list of use cases to decide which use case(s) are best for your campaign.

What if my registration is declined, and I need to provide the updated information for my registration?

An automatic support ticket would be created when the A2P registration form is submitted. You can select the “Update ticket” button on your A2P Campaigns page and provide the updated information there.

Can I add numbers to an existing campaign?

Yes! Once a campaign is active, you can register additional numbers directly through the Aircall Dashboard.

Steps:

  1. In A2P Registration, locate your active campaign.
  2. Click Add number to this campaign.
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  1. Enter the new number.
  2. Tick the acknowledgement box.
  3. Submit the update.
  4. To monitor the progress of amendments, open the Amendments tab.
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Note: Amendments refer to changes made to an already registered messaging campaign or brand.
Important: There is a known issue we are working on: even if your campaign was approved through a support ticket and you were previously able to add a number to it, it may still appear as rejected in the Aircall Dashboard (A2P Campaigns tab). When this happens, you will not be able to add any new numbers to the existing campaign directly from the dashboard.

If you are unable to add new numbers via the dashboard, you can still request it by contacting our Customer Support team to add a new number to an existing, approved registration.

Steps:

  1. Navigate to our Help Center > select Contact Us
  2. Choose >Number Porting, Purchasing, and Compliance.
  3. Select your language and region.
  4. Under “What can we help you with”, select A2P10DLC SMS Registration (USA/CA Only), and under “What do you need to do”, select Add Number to Existing SMS A2P10DLC Campaign.
  5. Enter the company name and use case of the approved registration.
  6. Add the new numbers to be registered in the Included Numbers section.
  7. Submit the request.

Where can I confirm my Trust Score?

For Low Volume brand registration, no Trust Score is assigned. Secondary vetting would need to be completed on Low Volume brands in order to be assigned a Trust Score. For Standard brand registration, contact our Customer Support team, and we can confirm the Trust Score for you.

How does my Trust Score impact the number of SMS messages I can send?

The higher your Trust Score, the higher your throughput. Each tier of Trust Score dictates the allowed throughput. You can review the different tiers of Trust Scores in the article A2P 10DLC: Trust Scores & messaging limitations. 

How can I complete Secondary Vetting to increase from a Low Volume brand to a Standard brand?

To complete Secondary Vetting, please reach out to our Customer Support team:

  • In Help Centre, go to “Contact us”
  • Choose “Number Purchasing and Number Porting”
  • Provide all the details, and we can share insight on how to complete secondary vetting.