Twilio has successfully participated in a first-ever test of the Robocall Control Database (RCD) using the STIR/SHAKEN protocol, which aims to prevent illegal robocalls. The test, involving key players across the telecommunications industry, demonstrated the ability to authenticate caller ID and Rich Call Data, enhancing trust in the phone ecosystem. This technology is crucial for enterprises, allowing them to sign calls and be trusted in the telephony ecosystem. Twilio will continue to engage with the broader ecosystem to pursue its shared goal of bringing trust back to the phone call for end users, supporting efforts to combat illegal robocalls and providing consumers with relief from unwanted communications.