Carriers Are Shaking Things Up With 10dlc


10DLC SMS service

As more and more businesses utilize the SMS communication channel, the Tier 1 North American Carriers are having to make some changes to keep up with the demand. Specifically with 10-digit long codes (10dlc) application to person (A2P) SMS messaging services. 

May 1, 2021, the North American carriers (AT&T and T-Mobile/Sprint to name a few) have come together and are requiring all SMS providers to register all of their customers and campaigns that utilize 10dlc.

So, how will it affect me?

This sounds like bad news and extra work, but it’s actually a fantastic step forward in making sure legitimate messages are delivered with the security and reliability you’re paying for, and will continue to improve as the carriers ramp up their systems.

Red Oxygen customers have the luxury of our superior sales and support staff to make sure their brands and campaigns are registered correctly but we will be contacting all customers to gather additional information to do so.

What we know right now:

  • There will be a deadline for finalizing registration…it’s looking like May 1, 2021, but this date has been a bit of a moving target.
  • There will be fees for registration as well as monthly campaign fees, fees will vary on use case
  • There will be additional carrier fees per SMS sent/received
  • Fines and filtering by carriers will commence if not registered by June 1, 2021


Along with 10dlc changes across the SMS landscape the usage of shared short codes is changing drastically. Shared short codes will be dismantled, moving those sharing codes to dedicated short codes, toll-free numbers or dedicated 10dlc.

As we learn more, we’ll share it. 

Red Oxygen will work earnestly toward full customer registration by May 1, 2021 and will continue to supply updates as we learn them. 

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