1. Overview of A2P 10DLC
Application-to-Person (A2P) messaging using 10-digit long code (10DLC) numbers is the U.S. carrier framework that allows businesses to send SMS and MMS messages to their customers using standard-looking local phone numbers. A2P 10DLC is governed by The Campaign Registry (TCR) and administered by the major mobile carriers (AT&T, T-Mobile, Verizon, and UScellular).
Simply Sterling AI provisions and operates A2P 10DLC messaging as part of the automated intake, dispatch-triage, and quote-recovery pipelines we build for residential and commercial HVAC contractors. This disclosure explains how those messages are registered, consented, delivered, and governed.