❓ What is A2P and Why Do I Need It?
A2P = Application-to-Person. 10DLC = 10-Digit Long Code (your standard business phone number)
If you want to register phone services in the United States through Ivorey™ - A2P 10DLC registration is a legal requirement.
It’s a way to legally send SMS to U.S. numbers from your business, stay compliant, and avoid being flagged as spam.
Registration includes a fee of $15 USD (passed onto third party provider).
The approval process can be tricky. Make sure all your information is accurate and consistent. Incorrect or inconsistent details are the #1 reason applications get rejected. New EINs (issued in the last 45 days) are also often rejected. Consider waiting or submitting supporting docs.
If you're registering for an Australian number, you'll require a "Regulatory Address Bundle" instead, not A2P.
🔐 What’s a Trust Score?
After you register, your brand gets a Trust Score — it tells carriers how trustworthy your brand is. Higher scores = higher message throughput (faster and more reliable sending).
Your Trust Score is based on:
Whether your info matches across your website, brand name, and messages
How transparent you are about opt-in and opt-out
Your messaging history
🧾 What You Need Before You Start
Make sure you have:
Business Legal Name (must exactly match IRS records)
Valid EIN (Employer Identification Number)
Business Type: LLC, Corporation, etc.
Business Industry
Official Business Website
Business Address
Business Contact Information
Authorized Representative’s Name, Title, Email, and Phone Number
✅ How To Submit Standard Brand A2P Registration
Start the Wizard:
Go to your Ivorey™ account > click Settings > Phone Services > open the Trust Center tab.
Click Start Registering Now under the A2P Wizard.
If the business has a Tax Number (EIN for the US, CCN for Canada, etc.), Please select "Yes, the business I’m registering has a US EIN"(Standard Low Volume Brand Registration).
If the business does not have a Tax Number but operates from a valid Business Address in the US/Canada, Please select "No, the business I’m registering does not have a US EIN"(Sole Prop Brand Registration).
If the business does not have a Tax ID and the business address is not in US/Canada, unfortunately, they cannot proceed with A2P Brand Registration. In this case, the best alternative would be to use Toll-Free numbers after completing the registration process.
Enter your business details:
Legal Business Name: Exactly as shown on your CP 575 (IRS EIN confirmation letter).
Business Type: Choose from the list (LLC, Corporation, etc.).
Registration ID Type + Number: EIN for U.S. businesses.
Industry: Choose your business category.
Business Email (use a domain-branded email, not Gmail).
Website URL
Region of Operations
Click Continue.
Enter your registered business address:
Country, State, City, Zip Code
Street Address (must be real — no PO Boxes)
Click Continue
Enter your Authorised Representative (e.g. yourself)
Full Name
Business Email Address (not personal)
Phone Number
Job Title
Click Continue
Choose Your Brand Type:
Low Volume Standard (suitable for most)
Up to 6,000 message segments/day
One-time fee: ~$23.95 (includes fast-track)
Up to $12 USD/month campaign fee
High Volume Standard
Up to 600,000 message segments/day
One-time fee: ~$68.05 (includes fast-track)
Up to $12 USD/month campaign fee
Add Campaign Details:
Write how you’ll use SMS. Example: “We send appointment confirmations and reminders to customers who’ve opted in via our booking form.”
Sample messages must include the leads name, your business name, and an opt-out line (e.g. “Reply STOP to unsubscribe”).
Example 1: Hi Sarah! This is Mia from [Business Name]. Your session for March 10 is confirmed. Need to reschedule? Call 555-555-5555. Reply STOP to unsubscribe.
Example 2: Hey Sam! This is [Business Name]. It looks like you missed your appointment. Book a new time here: www.yourbusinessname.com/reschedule. Reply STOP to unsubscribe.
Select message content options (e.g. “contains link,” “includes phone number”), then Continue.
Add Consent Details:
Clearly explain how customers opt in, ensuring to always include the proof of links etc where appropriate.
Consent Example: “Customers opt in via our website at www.yourbusinessname.com/book. They check a box confirming they want to receive reminders and updates.
Opt In Confirmation Example “You’re subscribed to SMS updates from Your Business Name. Reply STOP to unsubscribe."
Click Submit.
⏭️ What Happens After A2P Submission?
Your application goes for third party approval. This process can take up to 2 weeks, but is usually quicker. Please note Ivorey™ has zero control over this process and we cannot do anything to speed it up.
If denied, you'll need to address any errors and resubmit.
Once your Brand registration is successfully approved as part of the A2P 10DLC setup, the next essential step is to register a Campaign associated with that Brand. This step is mandatory to begin sending A2P messages through 10DLC phone numbers. However, it’s very important to note that Campaign registration is not triggered automatically once your Brand gets approved. There is a common misconception that the system handles this automatically - but that’s not the case.
You will need to manually submit the Campaign registration yourself after Brand submission / Approval. Until this is done, your A2P 10DLC setup remains incomplete, which means you will not be able to send compliant SMS messages through your 10DLC numbers.
✅ The Final Step After A2P Brand Approval:
After receiving confirmation that your Brand is approved:
Go to Trust Centre >> A2P Wizard.
Click on Create Campaign.
Initiate and complete the Campaign registration form.
Await Campaign approval before using your number for A2P messaging.
ℹ️ Frequently Asked Questions About A2P Approval
What’s the difference between Sole Proprietor and Standard Brand?
What’s the difference between Sole Proprietor and Standard Brand?
Sole Prop is for individuals without an EIN. Standard Brand is for registered U.S. businesses with an EIN.
Why was my A2P brand registration rejected?
Why was my A2P brand registration rejected?
Likely reasons include EIN mismatch, invalid website, or use of a PO Box. Ensure the legal business name and EIN number exactly match what’s shown on the CP 575 form. Do not use the business name found on W2 or W9 forms, as they may differ. If the business name spans multiple lines on your CP 575/147c letter, you must enter all lines above the address line during registration.
Example:
ABC Holding Group Inc.
Division of Regional Services
123 Main Street
New York, NY 10001
The legal name to enter would be: ABC Holding Group Inc. Division of Regional Services
Can I add new numbers after completing A2P Brand and Campaign Registration?
Can I add new numbers after completing A2P Brand and Campaign Registration?
Yes. Any numbers you add after your brand and campaign are approved will be automatically registered under the same campaign — no resubmission is needed. It may take several days for registration to complete.
Does this apply to only marketing campaigns or does it apply to all SMS?
Does this apply to only marketing campaigns or does it apply to all SMS?
A2P 10DLC is applicable for all Application-to-Person texting like marketing SMS, reactivation campaigns, appointment reminders, prospecting, billing alerts, 2FA login codes, etc.