The Complete 10DLC Registration Guide for 2026

Quick answer: how 10DLC registration works in 2026

To send application-to-person text messages from a standard 10-digit US number you must register with The Campaign Registry through your messaging provider in two steps: a Brand (your legal entity, EIN, address and website, vetted to produce a 0-100 trust score) and at least one Campaign (use case, description, sample messages, opt-in method, STOP/HELP handling, privacy policy). Brand registration costs about $4 plus about $40 for vetting; campaigns cost $15 per vetting attempt and $1.50-$10 per month. Brand approval takes minutes to a day, campaign approval one to three business days when the submission is complete, and the trust score sets your throughput on AT&T (per-minute classes) and T-Mobile (daily caps). Unregistered traffic is blocked. This guide is the hub for the whole series; each section links to a deeper article.

Your SMS messages are getting filtered. Maybe they are being outright blocked. You submitted your 10DLC campaign three weeks ago and it is still sitting in a pending state with no explanation. Meanwhile, your customers are not getting the appointment reminders, order confirmations, or verification codes they need.

This is the reality for thousands of businesses navigating A2P 10DLC registration in 2026. The system was designed to stop spam and protect consumers, which is a good thing. But the registration process itself is riddled with vague requirements, inconsistent carrier enforcement, and approval timelines that can stretch for weeks.

This guide walks through every step of the 10DLC registration process, explains the most common reasons for rejection, and gives you specific fixes for each one.

The 10DLC compliance series

This page is the hub. Each deep-dive covers one stage in detail:

• 10DLC explained: why carriers require it and who it applies to
• 10DLC throughput and trust scores: AT&T per-minute classes, T-Mobile daily caps and how to raise your score
• 10DLC campaign approval checklist: sample messages, opt-in and privacy policy language that pass first time
• 7 reasons 10DLC campaigns get rejected, and the fix for each
• 10DLC error codes: what 30004, 30007 and 30034 mean and how to stop filtering
• Short code vs 10DLC vs toll-free: which number type fits your volume
• A2P messaging compliance services: what a managed 10DLC, opt-out and consent program includes
• TCPA compliance for SMS in 2026: consent, quiet hours and penalties
• How The Campaign Registry works

What Is 10DLC and Why Does It Exist?

10DLC stands for 10-Digit Long Code. It refers to the standard local phone numbers that businesses use to send Application-to-Person (A2P) SMS and MMS messages in the United States.

Before 10DLC regulations, anyone could send bulk messages from local numbers without verification. Spammers exploited this aggressively, which eroded consumer trust in business text messaging. By 2021, US carriers, led by T-Mobile and AT&T, began requiring all businesses sending A2P messages from local numbers to register through a centralized system.

The Campaign Registry, or TCR, is the organization that manages this registration. Every business that sends SMS or MMS from a 10-digit local number in the US must register a Brand and at least one Campaign through TCR, via their messaging provider.

If you do not register, your messages will be filtered, throttled, or blocked entirely. Carriers also charge additional surcharges for unregistered traffic, making it more expensive to send messages without proper registration than with it.

Step 1: Register Your Brand with TCR

Your Brand is your business identity within the TCR system. This is where you provide your company details so carriers can verify that you are a legitimate sender.

You will need the following information ready before starting:

Your legal business name, exactly as registered with the IRS or your state.

Your EIN (Employer Identification Number) or DUNS number.

Your business address, phone number, and website.

Your vertical or industry category.

A contact person with an email address at your business domain, not a Gmail or Yahoo address.

Common Brand Registration Mistakes: Using a DBA name instead of your legal entity name. Providing a personal email instead of a company domain email. Mismatched information between your EIN records and what you submit. Any mismatch between your registration details and publicly available business records can trigger a rejection or a lower trust score.

Step 2: Understand Your Trust Score

After your Brand is registered, TCR assigns a Trust Score based on your business details and third-party data verification. This score determines your messaging throughput, meaning how many messages you can send per second. The exact AT&T per-minute classes and T-Mobile daily caps for every score band are in our 10DLC throughput and trust score guide.

If your Trust Score is lower than expected, you can request a manual vetting process for an additional fee, typically around $40. Manual vetting uses enhanced verification checks and can significantly increase your score and throughput limits.

Step 3: Create Your Campaign

A Campaign in the TCR system describes a specific use case for your messaging. Each campaign must include:

A clear description of what messages you will send and why.

Sample messages that represent your actual content.

Your opt-in method, explaining exactly how customers agree to receive your messages.

Your opt-out mechanism, typically STOP keyword handling.

A HELP response that tells customers how to get assistance.

A link to your privacy policy and terms of service.

Campaign Use Case Types: TCR categorizes campaigns by use case. Common categories include marketing, customer care, delivery notifications, account notifications, two-factor authentication, and mixed. Choosing the right category matters because carriers apply different filtering rules to different use case types. Fees: $15 per campaign vetting attempt and a monthly campaign fee of $1.50 (low-volume mixed), $2 (sole proprietor), $3 (charity), $10 (standard) or $30 (agents and franchises), passed through at cost by Signalmash.

Step 4: Write Sample Messages That Get Approved

This is where most rejections happen. Your sample messages need to clearly match the use case you selected, and they must demonstrate compliant messaging practices. Our campaign approval checklist has a full set of samples, descriptions and disclosure text that pass.

Good sample messages include your business name, a clear purpose, and opt-out language. For example:

[YourBrand] Your appointment is confirmed for Tuesday at 2:00 PM. Reply STOP to unsubscribe.

[YourBrand] Your order #12345 has shipped and will arrive by Friday. Track it here: [link]. Reply STOP to opt out.

Bad sample messages are vague, missing business identification, or look promotional when your use case says transactional. Reviewers flag messages that do not match the stated campaign purpose.

Step 5: Document Your Opt-In Process

Carriers are strict about consent. Your campaign must explain exactly how customers opt in to receive your messages. Acceptable opt-in methods include:

A web form where customers check a box to receive SMS communications, with clear disclosure language.

A keyword opt-in where customers text a specific word to your number.

A paper form or in-person consent with documented records.

An existing business relationship with documented consent records.

Your opt-in disclosure must be specific. It needs to mention SMS or text messaging by name, identify your business, describe the types of messages customers will receive, state the message frequency, and note that message and data rates may apply.

Common 10DLC Rejection Reasons and How to Fix Them

The full list, with the fix for each, is in 7 reasons your 10DLC campaigns get rejected. If the campaign is approved but messages fail afterwards, start with the 10DLC error code guide.

How Long Does 10DLC Approval Take?

Approval timelines vary based on your messaging provider, your use case, and current review volumes. In general:

Brand registration typically takes minutes to 24 hours for standard processing; third-party vetting returns a score within one to three business days.

Campaign review takes one to three business days for complete standard submissions, and up to 15 business days during high-volume periods or for special use cases such as political, charity and agents and franchises.

Manual vetting or an appeal, if requested, adds another few business days.

Some messaging providers, including Signalmash, offer hands-on support through the entire registration process. Instead of submitting your information into a dashboard and waiting for a generic approval or rejection email, you work with a real person who reviews your campaign details before submission and helps you fix issues before they become rejections.

What Happens After Approval?

Once your Brand and Campaign are approved, you need to associate your 10DLC phone numbers with the approved campaign. Only numbers linked to an approved campaign will send messages at your full throughput allocation. Attach numbers within 60 days; T-Mobile charges a $250 non-use fee for campaigns left empty.

Numbers that are not associated with an approved campaign will either be blocked or will incur additional carrier surcharges for unregistered traffic. Both T-Mobile and AT&T charge fees for messages sent from unregistered numbers, and those fees add up quickly.

Keep your campaign details up to date. If your messaging use case changes significantly, you may need to submit a new campaign or update your existing one. Carriers periodically audit registered campaigns, and mismatches between your registered use case and actual messaging patterns can result in suspension. Registration is the carrier side of compliance; the legal side (consent, quiet hours, opt-outs) is covered in our TCPA guide, and what a provider should run for you on both sides is in A2P messaging compliance services.

Why Your Messaging Provider Matters for 10DLC

The 10DLC registration process looks the same on paper regardless of which CPaaS provider you use. In practice, the experience varies wildly.

Some providers give you a self-serve dashboard and leave you to figure out the details on your own. When your campaign gets rejected with a generic error message, you are on your own to guess what needs to change.

Signalmash takes a different approach. Their team reviews your Brand and Campaign details before submission, catches common issues that trigger rejections, and works with you to get campaigns approved on the first attempt. Customers consistently report that the process feels hands-on rather than self-serve, and approval timelines are shorter because submissions are cleaner from the start.

If you are struggling with 10DLC registration or just want to get it right the first time, Signalmash offers a white-glove approach that treats compliance as a partnership, not a product feature.

Book a 15-minute call with Signalmash and we will review your brand and campaign before it goes to The Campaign Registry.

People also ask

What is 10DLC registration and is it mandatory?

10DLC registration is the process of registering your business (Brand) and each messaging use case (Campaign) with The Campaign Registry so US carriers can identify who is sending application-to-person texts from 10-digit local numbers. It is mandatory: since 2023 unregistered A2P traffic to AT&T, T-Mobile and Verizon subscribers is blocked rather than merely surcharged.

How much does 10DLC registration cost?

Registry fees are about $4 for the brand, about $40 for third-party vetting (recommended), $15 per campaign vetting attempt and a monthly campaign fee of $1.50 to $10 for standard use cases ($30 for agents and franchises). Carriers add per-message surcharges of roughly $0.002-$0.005. Signalmash passes all of these through at cost.

How long does 10DLC registration take?

Brand registration is usually instant to 24 hours and vetting returns a score within one to three business days. Campaign approval takes one to three business days for a complete standard submission, longer for special use cases or after a rejection. With a provider that pre-reviews the submission, most businesses are sending within a week.

Who offers 10DLC registration and messaging compliance services?

Every US A2P messaging provider offers 10DLC registration; the difference is how much they do for you. Self-service platforms such as Twilio, Plivo and Telnyx give you a portal; managed providers such as Signalmash file the brand and campaigns, pre-check them against carrier rejection reasons, handle resubmissions and run opt-out and consent handling as part of the service.