Can't Deliver Texts Due to 10DLC?
Recent 10DLC changes are blocking SMS deliverability for unregistered VOIP phone numbers.
No Need to Switch Phone Providers
There's 2 parts to an office phone number: Voice and Messaging. Keep your voice service with any phone provider and host your SMS with Alive5 for advanced texting capabilities.

SMS service back within hours not weeks
Super-fast
10DLC approval process to get your texting back up ASAP.
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Supercharged Texting with Alive5
Alive5 makes advanced texting simple. Features like scheduling, sending large files and photos, archiving, mass messaging, and
more. Your team will never want to go back to basic texting.
Manage One or
Many Lines
Handle texts to your main number and even your sales teams' direct lines.
Keyword Campaigns
Create campaigns based off keywords such as 'demo' to trigger automated flows (try it out above).
Out of Office Replies
Use our no-code drag and drop chatbot builder to create automated replies.
Mobile & Desktop Alerts
Get push notifications whenever anyone messages you on our mobile or desktop apps!
Unlimited Templates
Create as many canned answers and phrases for your team to use.
Send Photos & Videos
Send large MMS text messages including PDFs, Images, and Videos.
What's happening?
⚠️ 10DLC (10-digit long code) is a messaging format introduced by mobile carriers in the United States to regulate Application-to-Person (A2P) messaging. It went into effect in the first quarter of 2021, with phased implementations and increased blocking of non-compliant numbers in subsequent years.
Customer Quotes
Alright we are in!!! I already saw a text come through, that's absolutely amazing. Appreciate your service.
Jessica, Vonage User
WindowCleaner.com
Window Cleaning Resource; your home for window cleaning supplies.

After switching to Alive5, my SMS was up and running within an hour, despite being down for two weeks with my previous provider. The onboarding process was straightforward, and I'm thrilled with the quick resolution. If you need a reliable SMS solution, I highly recommend Alive5!
Victor, Vonage User
Computer-Industries.com
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What happened with 10DLC?
10DLC (10-digit long code) is a messaging format introduced by mobile carriers in the United States to regulate Application-to-Person (A2P) messaging. It went into effect in the first quarter of 2021, with phased implementations and increased blocking of non-compliant numbers in subsequent years.
The progression of 10DLC in blocking unregistered phone numbers has been as follows:
- Initial implementation (Q1 2021): Mobile carriers started requiring businesses to register their brand and campaign information for sending A2P messages using 10-digit long codes.
- Increased filtering (Q2-Q3 2021): Carriers began to filter and block messages from unregistered 10DLC numbers more aggressively. This led to a higher volume of blocked messages for unregistered brands and campaigns.
- Stricter enforcement (Q4 2021 - 2022): Mobile carriers further tightened their filtering algorithms and increased the penalties for non-compliance. Unregistered 10DLC numbers faced a higher risk of being blocked or having their messages delayed.
- Ongoing monitoring and updates (2023 and beyond): Carriers continue to monitor 10DLC traffic and update their policies to combat spam and maintain a clean messaging ecosystem. Unregistered numbers are likely to face persistent blocking and other penalties.
- As of May 20, 2024, Vonage has blocked all unregistered SMS traffic. Customers who have not registered will no longer be able to send SMS messages through the Vonage platform.
- By December 2024, any non-compliant phone numbers on any provider will no longer be able to send SMS text messages.
To avoid disruptions in their messaging services, businesses are required to register their brand, obtain a trust score, and register their messaging campaigns with the carriers. Failure to comply with these requirements can result in messages being blocked, delayed, or filtered by the carriers.
Alive5 can get you back up with SMS in a few hours. Just text us at 855-551-8858 and mention '10DLC'.