10DLC stands for 10-Digit Long Code — a standard for business text messaging using regular US 10-digit phone numbers registered for Application-to-Person (A2P) messaging. Introduced in 2021, 10DLC allows businesses to send commercial SMS from standard phone numbers at higher throughput and with carrier support, while reducing spam and improving message deliverability.
Why 10DLC Was Created
Before 10DLC, businesses using regular long code phone numbers for commercial messaging frequently had messages filtered or blocked by carriers, because these numbers were originally intended for person-to-person (P2P) communication. Carriers couldn't distinguish legitimate business messages from spam. 10DLC created a formal registration pathway for businesses to declare their messaging use cases and get carrier approval for higher-volume A2P messaging.
How 10DLC Registration Works
To use 10DLC for business messaging, organizations register through The Campaign Registry (TCR) — a neutral third party that vets businesses and their messaging campaigns. Registration involves:
- Brand Registration: Verifying the business identity (EIN, legal name, type)
- Campaign Registration: Describing the specific use case (marketing, alerts, 2FA, etc.) and obtaining carrier approval
- Number Association: Linking registered phone numbers to approved campaigns
10DLC Throughput and Limits
Approved 10DLC numbers can typically send 75–225+ messages per minute depending on carrier trust scores assigned during registration. This is far higher than unregistered long codes (which carriers may cap at 1 message per second or lower) but lower than dedicated short codes (which can handle thousands per second).
10DLC vs Short Codes vs Toll-Free
10DLC is best for most business messaging — lower cost than short codes, registered for compliance, local US number format that recipients recognize. Short codes are better for extremely high-volume campaigns (millions of messages) where throughput is the primary concern. Toll-free SMS suits businesses that want their toll-free customer service number to also send texts.
10DLC and On-Premises SMS Software
Organizations using on-premises SMS software connect to carrier networks via registered numbers through their SMS provider's infrastructure. When selecting an SMS delivery pathway for software like PageGate, ensure your carrier connection or GSM modem uses numbers registered appropriately for your messaging use case to maintain deliverability.
