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A2P 10DLC Numbers

A2P 10DLC is a registration process required by carriers when using 10-digit local numbers for mass texting. It sounds boring, but it's very important. With Clearstream, all your numbers are registered for A2P with no additional cost. A2P registration increases your message throughput and deliverability and significantly decreases carrier filtering of your messages. Every Clearstream account, including subaccounts, comes with a registered A2P 10DLC number.


Why do I need to use an A2P number if I'm not using a dedicated short code?

If you don't have a dedicated short code, the other carrier-approved option is an A2P 10DLC number. A registered long code helps mitigate spam and slow throughput issues, which often occur because carriers are blocking mass texts from P2P numbers (long codes that aren't registered). When you send a text to a friend or your Uber driver lets you know they've arrived — those are P2P exchanges. When you text a small group or inform your church about service changes — those are A2P exchanges.

Do I have to do anything to register for an A2P 10DLC number?

Once you choose and create a 10-digit number in your Clearstream account, you'll see a notification asking you to register your number. We'll need your EIN number (if your church has one) and then some basic information about your church including name, address, and website.

Are all 10-digit local numbers A2P-enabled?

Yes-ish. A 10-digit local number (aka long code or 10DLC) can be a P2P (person-to-person) or A2P (application-to-person) number. A long code that is used to send mass texts must be registered as an A2P number.

All Clearstream numbers are registered as A2P numbers.

The only exception is if you use a toll-free number instead of a local number. Toll-free numbers are not yet included in A2P registration, but likely will be in the future.

What kind of throughput can I expect with A2P numbers?

Unlike other providers, Clearstream will register your A2P number to maximize throughput. In most cases, you will be able to achieve 10-100mps throughput using your A2P numbers.

You can improve your throughput by making sure to provide your EIN when submitting your A2P registration information.

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