Long codes – 10DLC

What is 10DLC?

10DLC (10-digit long code) is a carrier-sanctioned channel that allows brands to send A2P text messages using 10-digit local numbers available in the North American Numbering Plan (NANP). It replaces shared short codes and unregistered long codes in the U.S.  

As major U.S. carriers now prohibit the use of P2P long codes and shared short codes, businesses that have been using this type of numbers or U.S. traffic need to adjust their messaging setup to avoid their messages being blocked.  

10-Digit Long Codes offer better brand recognition, engagement opportunities, and cost-efficiency. They’re ideal for A2P transactional messages such as notifications and reminders, one-time pin codes, product and service updates, and small-scale marketing campaigns. They also support two-way messaging and voice. 

How does Sinch work with 10DLC?

Sinch offers 10DLC numbers for businesses looking to replace shared short codes and unregistered long codes for U.S. traffic or complement their existing messaging setup.  

10DLC allows our customers to easily enrich customer interactions and boost engagement with personalized two-way conversations over SMS, MMS, and voice calls, all while reducing blocked messages and building trust through a recognizable local number. You can also protect user privacy by anonymizing numbers. 

What are the benefits of partnering with Sinch to start using 10DLC?

With our enterprise-grade platform and robust network of 600+ direct carrier connections, we ensure best-in-class message delivery, always with top-notch security.  

Our expert team is happy to help you migrate from a shared short code to a 10DLC number. We’ve got tons of experience, so get in touch and we’ll have you up and running in no time!

Why use Sinch Engage for your 10DLC SMS campaigns

Sinch Engage is an all-in-one messaging application made for sending beautiful and fully-compliant text messaging campaigns at scale. Sinch Engage covers it all: register your 10DLC numbers, handle compliance, send and automate any SMS campaign, sync with your tech stack (like HubSpot, Shopify, etc.) and monitor performance – all from one easy-to-use platform.

Whether you’re sending reminders, promotions, transactional alerts and updates, or two-way support, we ensure your messages are delivered reliably, securely, and in full compliance with U.S. 10DLC regulations. Explore how you can send smarter, more compliant SMS campaigns with Sinch Engage.