What is A2P 10DLC compliance?
A2P 10DLC is a messaging standard that lets you send bulk texts from a regular phone number instead of a short code. If you text job updates to customers or crew, you need to understand this requirement — it affects whether your messages actually get delivered.
What A2P 10DLC actually is
A2P stands for Application-to-Person. 10DLC means 10-Digit Long Code — a standard 10-digit phone number like the one your customers see when you text them. Carriers created this standard to reduce spam and fraud. Before 10DLC, scammers flooded networks with bulk messages from regular numbers, so carriers cracked down. Now if you want to send more than a handful of texts per day, you need to register your business and get approved. Think of it like getting a business license for texting. You provide your company name, phone number, and what you'll use SMS for. The carrier verifies you're legit, not a spam operation. Once approved, your messages get delivered normally. Without approval, carriers start filtering or blocking your texts.
Why this matters for your business
Your crew needs to know when the job starts. Your customers want appointment reminders and status updates. If your texts don't reach them, they miss the message or assume you're flaky. Unregistered 10DLC numbers get throttled or outright blocked by carriers like Verizon and AT&T. You'll send a text and think it went through, but it never arrived. The customer thinks you ghosted them. Even worse, high volumes of unregistered texts can get your number flagged as spam. Carriers may permanently blacklist it. For a contractor, your phone number is your connection to work. Losing it means losing customer communication. That's why 10DLC registration isn't optional if you're texting regularly.
How to get and stay compliant
The process starts with your SMS provider — whoever handles your text messages. That might be your CRM, a dedicated SMS platform, or your phone service. Tell them you want to register for 10DLC compliance. They'll ask you to verify your business name, EIN or SSN, business address, and the phone number you'll use for texting. You'll also declare your use case (appointment reminders, order updates, etc.). The carrier reviews this in 1-3 days. Once approved, you're good to send. The key phrase in your registration: you're sending transactional or marketing texts related to your services. Don't misrepresent what you're doing. Use the number only for business communication, not personal texts. Carriers audit registered numbers. If your volume spikes suspiciously or complaints come in, they may revoke approval. Keep your registration information current. If your business address or phone number changes, update it.
Common mistakes contractors make
Some contractors try to work around this by rotating phone numbers or using multiple lines. Carriers catch this and blacklist all of them. Others delay registration, thinking a few unregistered texts won't hurt. Then volumes grow, delivery drops, and they scramble to register after losing customers. A few contractors skip the registration entirely because their SMS provider didn't mention it. If you're using a CRM or texting tool that handles 10DLC registration as a built-in process, that's worth the price of entry — it means one less thing to track down. The takeaway: register early, use one consistent number, tell the truth about your use case, and update your information if anything changes.
Bottom line
Register your business phone number for 10DLC compliance with your SMS provider. Do this before you need high-volume texting, not after your messages stop getting through.