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# The 684 Area Code and the North American Numbering Plan
The 684 area code serves American Samoa, a United States territory located in the South Pacific Ocean. As part of the North American Numbering Plan (NANP), this area code enables telephone communications for the territory's residents and businesses. American Samoa, which includes the main islands of Tutuila and the Manu'a group, has been assigned this unique three-digit code to facilitate both domestic and international dialing. The 684 area code allows callers from the continental United States and other NANP regions to reach American Samoa with a standard long-distance call, integrating the territory into the broader North American telecommunications infrastructure despite its geographic distance from the mainland.
The North American Numbering Plan is a comprehensive system that organizes telephone numbering across North America, including the United States, Canada, and various Caribbean and Pacific territories. Established in 1947, the NANP assigns three-digit area codes to geographic regions, with each code corresponding to a specific territory or metropolitan area. The inclusion of 684 for American Samoa reflects the NANP's extension beyond continental borders to encompass all U.S. territories and affiliated regions. This systematic approach ensures that each location has a distinct area code, preventing conflicts and allowing for efficient call routing. The NANP remains one of the most successful telecommunications standardization systems globally, facilitating seamless communication across millions of phone lines and enabling the integration of territories like American Samoa into a unified dialing framework.