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10DLC Registration
10DLC Registration:
What It Is, Why It Matters,
and How to Complete It
10DLC (10-Digit Long Code) registration is required by US carriers for all business SMS sent from local phone numbers. Without it, your messages will be blocked or filtered. Here’s what it means, what TextingOnly handles for you, and what you need to do.
10DLC registration is a carrier-mandated requirement for sending business SMS messages from local 10-digit phone numbers in the United States. It is not optional. Unregistered numbers face message filtering, blocked sends, and account suspension by carriers. TextingOnly handles the technical side — but your business information is required to complete the registration.
What Is 10DLC?
10DLC stands for 10-Digit Long Code — the standard local phone number format (e.g., 410-555-0100). In 2021, US carriers (AT&T, Verizon, T-Mobile, and others) introduced mandatory registration for businesses sending SMS from these numbers. The system creates a verified link between a business identity and the phone numbers it uses to send messages.
Registration happens at two levels: Brand Registration (your business identity) and Campaign Registration (the specific use case — marketing, lead generation, notifications, etc.). Both must be completed for a number to be fully approved for sending.
Why It’s Required
The 10DLC system was created to combat SMS spam. Before registration requirements, anyone could send bulk messages from local numbers with no accountability. Carriers now require all business senders to register their identity and use case — creating a verified, accountable business SMS ecosystem.
From a practical standpoint: if you send marketing or outreach SMS from a local number without 10DLC registration, your messages will be filtered at the carrier level before they reach your contacts. This is not a platform issue — it’s a carrier enforcement mechanism that affects every SMS platform equally.
What TextingOnly Handles for You
TextingOnly submits registration to The Campaign Registry (TCR) — the central registry all carriers use — directly from the platform. You don’t interact with TCR yourself.
Once registration is approved, your numbers are automatically associated with the approved campaign. No technical steps required on your end after approval.
TextingOnly maintains required opt-out handling (STOP/HELP/UNSUBSCRIBE), which is a carrier compliance requirement built into every send automatically.
Registration status is visible in your Numbers dashboard. You can see whether each number’s 10DLC campaign is Pending, Approved, or requires attention.
What You Need to Provide
TextingOnly will prompt you for the following information during the registration process. Have it ready before starting:
Providing inaccurate business information or misrepresenting your use case will result in rejection or revocation. Registration is reviewed by carriers — not just a checkbox.
Registration Timeline
Brand Registration typically approves within 1–3 business days. Campaign Registration can take 5–15 business days depending on the use case category and carrier review queue. Marketing and lead generation campaigns receive standard review times. During the approval period, your number can receive inbound texts but outbound campaign sends may be limited.
Start registration as soon as you add a new SMS Campaign number — don’t wait until you’re ready to launch a campaign. The approval window is fixed regardless of when you submit.
What Happens Without Registration
Messages sent from unregistered numbers are filtered at the carrier level — they may appear to send successfully in the platform but never reach the contact’s device. Carriers do not provide delivery failure notifications for filtered messages, which makes unregistered sending particularly difficult to diagnose. If your campaigns show high send volume but low engagement, unregistered 10DLC is a common cause.
The TextingOnly team guides every account through the registration process. If you’re stuck or waiting on approval status, reach out directly.