What Is 10DLC? A Plain-English Guide to A2P Registration (2026)

10DLC stands for "10-digit long code" — the standard U.S. carriers use to allow businesses to send application-to-person (A2P) text messages from a regular local number. If you want to text customers at scale and have those texts actually arrive, you register for 10DLC. Here's what that means in plain English.

Why 10DLC exists

Carriers (AT&T, T-Mobile, Verizon) got tired of spam and unwanted automated texts. So they built a registration system: tell us who you are and what you'll send, and we'll let your messages through. Register properly and carriers trust your traffic. Skip it, and your messages get filtered or blocked.

That trade is the whole point — 10DLC is the price of reliable business texting, and it's why a registered sender reaches inboxes that an unregistered one can't.

10DLC numbers and 10DLC campaigns, in plain English

Two terms come up constantly, and they're simpler than they sound:

• A 10DLC number (or 10DLC phone number) is just a regular 10-digit local number that's been registered for business (A2P) texting. It looks like any local number to the person receiving the text — that's the appeal over short codes: local feel, far lower cost.
• A 10DLC campaign is not a marketing campaign. It's the registered record of what you send — your use case, sample messages, and opt-in method — that carriers approve.

The two connect: a 10DLC number has to be linked to an approved campaign before it can send. If registered messages ever stop landing, an unlinked number is the first thing to check. In PitchPrfct, numbers are bought in-app ($1/month each) and linked to your campaign from the 10DLC dashboard.

Brand vs. campaign registration

10DLC has two parts, and you need both:

• Brand registration identifies your business — legal name, EIN, address, website. Carriers verify this against public records, so your details have to match exactly. Brand approval is typically a couple of business days.
• Campaign registration describes what you'll send — your use case (e.g. marketing, appointment reminders), sample messages, and proof of how people opt in. Carriers review this to make sure your messages match what you registered.

Think of the brand as "who's texting" and the campaign as "what they're texting and why."

The registration steps

1. Get a number to send from.
2. Register your brand (business identity + EIN).
3. (Optional) Vet your brand to raise your trust score and throughput.
4. Register your campaign with your use case, sample messages, and opt-in details.
5. Review by The Campaign Registry (TCR) and the carriers.
6. Go live and start sending.

Timelines vary by provider — brand approval is often days, while campaign review can stretch longer during busy periods. The single biggest cause of delay is a sloppy application, which brings us to the next part.

Trust scores and throughput

When your brand is approved, it gets a trust score (0–100). A higher score means carriers let you send more messages per day. Optional third-party vetting can raise it. Your score plus your campaign type set your daily sending caps — especially on T-Mobile, which enforces hard daily limits.

Why 10DLC campaigns get rejected

Most rejections come down to a handful of fixable mistakes:

• Business name or EIN doesn't match the IRS record.
• Prohibited use cases — lead generation, affiliate marketing, and high-risk financial offers won't be approved. Neither will SHAFT content (sex, hate, alcohol, firearms, tobacco).
• Sample messages don't match the campaign, or use {placeholders} instead of realistic text.
• No clear opt-in — carriers want to see how people consented.
• Website problems — broken links, missing privacy policy, or content that contradicts your stated use case.

Get these right up front and approval is usually smooth.

How to get approved fast

Doing this yourself means learning carrier rules by trial and error — and every rejection costs time. The faster path is a platform that handles registration for you: pre-checks your application, formats it the way carriers expect, and guides your opt-in setup. PitchPrfct does exactly that, which is why most customers get approved in days rather than weeks. See pricing for what's included, or our A2P 10DLC registration guide for the full requirements, cost, and timeline.

Once you're approved, the next thing to get right is staying compliant on every send — that's the TCPA. And if you're new to the channel overall, start with what SMS marketing is.

Want 10DLC handled for you? Start a free trial.