A dialing code, also known as a telephone country code, is a numerical prefix used to identify a specific country or region when making international phone calls. Each country has its own unique code, which is typically preceded by a "+" sign. For example, the dialing code for the United States is +1, while India has the code +91. These codes help telephone networks route calls to the correct destination. When dialing internationally, a caller must first enter the exit code of their country, followed by the dialing code of the destination country, and then the local phone number. This system ensures that calls are properly connected across different countries and regions, facilitating global communication.