Telnyx’s all-in-one API includes everything you need to buy, register and send SMS and MMS from a 10DLC number while maintaining strict compliance with 10DLC rules.

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Buy, manage and send messages from A2P 10DLC numbers

Telnyx’s platform allows you to buy numbers, complete 10DLC registration and send/receive SMS and MMS messages with those numbers—all through one simple API. With built-in compliance controls such as volume limits and automated opt-out, 10DLC messaging has never been easier.


A messaging platform designed for 10DLC rules

Our API takes care of the details around 10DLC so you can focus on making the most of messaging.

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    Built-in throughput limits

    Based on your compliance limits, Telnyx’s API automatically manages your throughput so you send as many messages as possible without violating any 10DLC regulations.

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    Automated opt-out for A2P 10DLC compliance

    Our platform features automated opt-out for anyone who replies with a stop word message (e.g. “STOP”) so you stay compliant with 10DLC rules.

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    One API for 10DLC registration and management

    Our award-winning API, built and continuously updated by a team of industry experts, allows everything from brand and campaign registration to sending and receiving messages.


Developer-friendly, scalable 10DLC API

Among SMS API providers, Telnyx consistently wins awards for its results and ease-of-use. We take care of the details as you scale, so you don’t have to.


Ranked API for Results and Ease of Use

Reduce costs without reducing results

By finding savings through optimization, our platform and team ensure you get a great deal on long code SMS and MMS without sacrificing performance.


Typical savings on Messaging Costs


Get started

Our code is your code

curl -X GET \
  --header 'Content-Type: application/json' \
  --header 'Accept: application/json' \
  --header 'Authorization: Bearer YOUR_ API_KEY' \
  • Icon Resources Article

    How to register for 10DLC and start sending messages

    We break down all of the steps you need to complete in order to comply with 10DLC, and explain how Telnyx can help.

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    SMS—including 10DLC—in the U.S.

    An overview of messaging in the U.S., with a particular focus on 10DLC, including 15 minutes where we cover common questions from real use

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    Telnyx 10DLC API endpoints overview

    The Telnyx 10DLC API facilitates interaction with The Campaign Registry (TCR), allowing the creation and registration of brands and campaigns with TCR.

10DLC pricing that’s competitive

Our customers regularly report saving at least 30% on messaging when they move to Telnyx without any reduction in deliverability, stability or any other performance measure.

Starting at


Per message

Long code SMS for almost any use case

Sign up and start building

10DLC registration is an industry requirement for a 10-digit-long code number sending Application-to-Person (A2P) traffic within the U.S. As of November 2022, a typical registration costs $30-40.