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# Virginia Area Code 703
The 703 area code serves Northern Virginia, including the populous regions surrounding Washington, D.C., such as Arlington, Alexandria, Fairfax, and Falls Church. Established in 1957 as one of the original area codes created when the North American Numbering Plan (NANP) was first implemented, 703 has become one of the most recognizable area codes in the nation due to the region's significant government, military, and corporate presence. The area code covers approximately 2,100 square miles and serves millions of residents and businesses in this economically vital region. In 2000, due to rapid population growth and increased demand for telephone numbers, the 571 overlay area code was introduced to serve the same geographic region, allowing both area codes to coexist in Northern Virginia.
The North American Numbering Plan is a standardized system that organizes telephone numbers across the United States, Canada, and other North American territories. Under this system, each area code is assigned to a specific geographic region, and telephone numbers are formatted as (NXX) NXX-XXXX, where the first three digits represent the area code. The Federal Communications Commission (FCC) oversees the allocation of area codes to ensure efficient use of the limited numbering resource. When an area becomes saturated with phone numbers, as happened in Northern Virginia, overlay area codes like 571 are added rather than reassigning existing numbers, allowing existing subscribers to keep their numbers while accommodating new growth.