Call blocking is a tool used to stop unwanted incoming calls from reaching a phone. Call blocking can be implemented by a consumer who no longer wishes to receive calls from a given number. Telco carriers also block calls based on algorithms that determine whether calls may be being placed by a bad actor. Currently, however, as carriers implement STIR/SHAKEN protocols and crack down on spoofed calls, many well-intentioned legitimate businesses are having their calls blocked before they reach consumers.