The Campaign Registry (TCR) is a third-party company designated by U.S. carriers to register brands and campaigns for businesses that send SMS and MMS over local phone numbers using 10DLC. Starting March 1st, 2022, unregistered traffic began incurring surcharge fees from carriers like T-Mobile and AT&T. Businesses must comply with TCR to avoid these fees by registering their brands and campaigns that utilize local numbers for A2P messaging. Bandwidth offers the ability to register brands and campaigns within its dashboard or via API, helping businesses navigate 10DLC compliance effectively and maintain efficient A2P message deliverability.