456

The 456 area code in the North American Numbering Plan (NANP) is unique and serves a special purpose, distinct from geographical area codes: Non-Geographic Code for Special Services: The 456 area code is not tied to a specific geographic area or region. Instead, it's designated for use in Inbound International (INI) services. This means it's used for calls coming into the United States, Canada, and other NANP countries from outside the NANP area. Specific Use in International Communications: The primary function of the 456 area code is to facilitate international telecommunications services. Companies that offer international calling services, such as callback services or international toll-free numbers, use this area code to route their calls. Regulated and Limited Usage: The use of the 456 area code is regulated and limited to specific service providers that meet the criteria for international inbound services. It's not used for regular consumer telephone services or associated with a particular city or state like standard area codes. The 456 area code plays a crucial role in the NANP by providing a distinct and specialized code for handling international telecommunication services, thus ensuring efficient and organized management of cross-border calls.