E164 is an international numbering plan used to standardize telephone numbers across the globe. It ensures that each phone number is unique and can be dialed from anywhere in the world. The format typically includes a country code, followed by a national number, allowing for efficient and consistent communication. The main goal of E164 is to simplify the process of dialing international calls. By adhering to this format, telecommunications providers can route calls accurately, reducing confusion and errors. This system is essential for global connectivity, enabling people to reach each other regardless of their location.