Area code 684 is the telephone code for American Samoa, a U.S. territory in the South Pacific, including the capital Pago Pago and surrounding islands. American Samoa was not part of the North American Numbering Plan in its early decades (it used a separate country calling code +684 internationally), but in October 2004 the territory was integrated into the NANP with area code 684. This change made dialing American Samoa similar to calling any U.S. state, improving communication links for the islands. 684 remains the only area code for American Samoa (one of the few U.S. jurisdictions with just a single code), reflecting the territory’s small population. An interesting quirk is the time zone – American Samoa operates on UTC−11, meaning the 684 region is among the last places in the world to greet each new day. Culturally, the area code ties American Samoa to the broader U.S. telecom network, even as the islands maintain their distinct Samoan language and traditions under the American flag.