What is 10DLC #
10DLC stands for 10-digit long code — the U.S. standard for business-to-consumer (A2P) text messaging sent from local numbers. Carriers introduced 10DLC to reduce spam, verify senders, and align message throughput with a brand’s trust level and campaign type.
How 10DLC compares #
| Channel | Best for | Pros | Considerations |
|---|---|---|---|
| 10DLC | Local alerts & two-way messaging | Recognizable number, lower cost | Requires brand & campaign registration |
| Short code | High-volume national programs | Very high throughput | Expensive, longer approval process |
| Toll-free SMS | Support or notifications | Nationwide reach | Verification recommended |
How registration works #
- Brand registration — submit your legal name, EIN, address and website.
- Campaign registration — describe your use case, sample messages and opt-in process.
After review, carriers assign throughput limits based on your campaign type and trust score. This process runs through The Campaign Registry (TCR) via your messaging provider.
Stay compliant #
- Consent: Text only users who opted in.
- Brand ID: Include your business name in every message.
- Keywords: Reply to
STOPandHELPautomatically. - Links: Use branded or full URLs (avoid bit.ly).
- Content: Exclude restricted or SHAFT categories.
- Opt-outs: Process quickly and maintain list hygiene.
Message examples #
✅ Compliant welcome
"Welcome to BrandName alerts. Msg&data rates may apply. Up to 3 msgs/week. Reply STOP to opt out."
⚠️ Risky first message
"50% off today only! Click bit.ly/offer" — lacks brand name, STOP option and uses a public short link.
FAQs #
Do I need 10DLC if I already use a short code or toll-free number?
No, each channel is separate. Use 10DLC for local, conversational messaging.
How are throughput limits set?
Based on your campaign type and trust score from registration.
Which carriers enforce 10DLC?
All major U.S. carriers, including AT&T, T-Mobile and Verizon, require 10DLC registration for A2P messaging.
Test your message before sending
Run your SMS through our free compliance checker to minimize carrier filtering.