What Is 10DLC? Meaning, Requirements and Why It Matters (2026)

Quick answer: what 10DLC means

10DLC stands for ten-digit long code. It is an ordinary US local phone number, the kind with an area code, that has been registered with the carriers for application-to-person (A2P) messaging: texts sent by software to customers, such as appointment reminders, delivery alerts, one-time passcodes and marketing. Since the US carriers made registration mandatory, every business text sent from a local number must belong to a registered brand (your legal business) and campaign (the messaging programme) at The Campaign Registry. Registered 10DLC traffic gets carrier-sanctioned throughput and far less filtering; unregistered traffic from local numbers is throttled or blocked outright.

This article is part of the Signalmash 10DLC compliance hub. For the step-by-step registration process, read A2P 10DLC registration requirements; to check whether your submission would pass, run the free 10DLC readiness checker.

Why the name matters: long code, short code, toll-free

US business texting runs on three kinds of number, and the name tells you which rules apply.

• 10DLC (local long code). A standard ten-digit local number. Cheap, looks familiar to the recipient, can carry voice as well as text, and requires 10DLC registration for A2P use.
• Toll-free (8XX long code). Also ten digits, but registered through toll-free verification rather than 10DLC, with higher default throughput and coverage across the US and Canada.
• Short code (5 or 6 digits). Leased purely for high-volume messaging, pre-approved by every carrier, hundreds of messages per second, and the most expensive to run.

The short code vs 10DLC vs toll-free comparison works through which to choose for a given volume and use case.

Why 10DLC exists

Until a few years ago, businesses could text from any local number, and spammers did. The carriers' answer was to distinguish person-to-person conversation from application traffic and to require the latter to be registered, vetted and tied to a real legal entity. The result is that a registered sender's messages are treated as known, sanctioned traffic and delivered at a predictable rate, while anonymous bulk sending from local numbers stopped working. For legitimate businesses this was mostly good news: better deliverability for less money than a short code, at the price of some paperwork.

The three moving parts

1. The brand

Your company, registered once with its exact legal name, EIN, registered address, website and vertical. The record is checked against IRS and state filings, so small mismatches are the commonest cause of delays.

2. Vetting and the trust score

A third-party vetting partner scores the brand from 0 to 100 based on its public footprint. The carriers map that score to throughput: AT&T assigns a messages-per-minute class (roughly 4,500 per minute for scores of 75 and above, down to 75 per minute for unvetted low-volume brands) and T-Mobile applies a daily cap per brand (200,000 messages a day at the top tier, 2,000 at the bottom). Adding phone numbers does not raise a brand-level limit. Details in throughput and trust scores explained.

3. The campaign

One registered description of each messaging programme: use case (customer care, 2FA, marketing, mixed and so on), a plain description, how people opt in, two to five sample messages, and confirmation that STOP and HELP are handled automatically. Numbers are attached to campaigns, and what you send has to keep matching what the campaign declared.

What 10DLC costs

Three layers, all of them mostly pass-through fees from the registry and carriers: one-time brand registration and vetting (a few dollars for the brand, roughly $40 for standard vetting, about $100 for enhanced, and around $15 per campaign vetting attempt); a monthly campaign fee (about $10 for a standard campaign, roughly $1.50 for a low-volume mixed campaign that caps your volume); and per-message carrier fees billed on every text you send. Providers differ on whether they add a margin and whether a rejected resubmission is charged again, which is why a rejection costs more than it looks.

How long it takes

A complete, consistent submission is usually done within a week: brand registration often clears in minutes to a day, vetting in one to three business days, and standard campaign review in one to three business days. A rejection adds a full review cycle plus the resubmission, in practice one to two weeks, and special use cases such as political or charity messaging take one to three weeks even when everything is right. The full breakdown is in how long 10DLC registration takes.

Who needs 10DLC

Any business sending application-to-person texts to US mobile numbers from a local number: that includes a dental practice sending reminders from its main line, a SaaS product sending login codes, and a retailer running promotions. Person-to-person conversations from a normal handset are exempt, but the test is behaviour rather than intent; software sending one message to many numbers is A2P however conversational the wording. Businesses without an EIN can register through a sole-proprietor path with tighter limits.

What happens if you skip it

Unregistered A2P traffic from local numbers is filtered or blocked by the US carriers, and the failure is usually silent: your platform reports the message as sent and the recipient never sees it. The fix is not a different number; it is registration. If the paperwork is the obstacle, Signalmash completes the brand and campaign registration for customers as part of onboarding and handles any resubmission.

Ask Signalmash to register your brand and campaign and we will tell you what your submission is missing before it costs you a review cycle.

People also ask

What does 10DLC stand for?

10DLC stands for ten-digit long code: a standard US local phone number registered with the carriers for application-to-person business messaging. The number itself is ordinary; the registration of the brand and campaign behind it is what makes it 10DLC.

Is 10DLC required?

Yes, for any application-to-person SMS or MMS sent to US mobile numbers from a local ten-digit number. The carriers filter or block unregistered A2P traffic on local numbers, so registration is a precondition for delivery. Toll-free numbers use toll-free verification instead, and short codes have their own approval process.

What is the difference between 10DLC and a short code?

A 10DLC number is a normal ten-digit local number registered for business messaging; a short code is a five- or six-digit number leased purely for high-volume texting. 10DLC is far cheaper and can carry voice, but its throughput depends on your trust score; a short code delivers hundreds of messages per second with no brand-level daily cap, at hundreds of dollars a month and a multi-week approval.

How much does 10DLC cost?

One-time brand registration and vetting (a few dollars plus roughly $40 for standard vetting or about $100 for enhanced, and around $15 per campaign vetting attempt), a monthly campaign fee of about $10 for a standard campaign or roughly $1.50 for low-volume mixed, plus per-message carrier fees. These are 2026 registry pass-through rates; check whether your provider adds a margin.

Can I text from a local number without 10DLC?

Only for genuine person-to-person conversation at human volume. Any automated or bulk sending from a local number is A2P and will be filtered or blocked if the brand and campaign are not registered. If you need to text customers from a local number, register it; if you need volume immediately, a verified toll-free number is the fastest compliant alternative.