Find any 571- phone number in Virginia
# Virginia Area Code 571
The 571 area code is an overlay for Northern Virginia, serving the same geographic region as the original 703 area code. Established in 1997 to accommodate the region's explosive growth during the technology boom, 571 was created as part of the North American Numbering Plan (NANP) to address the shortage of available phone numbers in Northern Virginia. This overlay system allows both area codes to serve the same territory, including major cities and suburbs such as Arlington, Alexandria, Fairfax, and Leesburg. Residents and businesses in this region can have either a 703 or 571 number, regardless of their physical location, making it possible for two phone numbers to serve the same address.
The North American Numbering Plan is a coordinated system managed by the North American Numbering Plan Administration (NANPA) that allocates area codes across the United States, Canada, and several Caribbean nations. Area codes are designated based on geographic regions and population density, with new codes introduced when existing ones become depleted. The system uses a specific format where the middle digit of an area code traditionally indicated whether it was a geographic area code (containing 0 or 1) or a non-geographic code. As Northern Virginia continued to grow with tech companies, government offices, and residential development, the addition of 571 demonstrated how the NANP adapts to meet modern telecommunications demands while maintaining the structured organization necessary for efficient call routing.