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Area Code 703 serves Northern Virginia, primarily covering the suburbs of Washington, D.C. Established in 1947 as one of the original North American area codes, 703 originally encompassed a larger region before the introduction of area code 703’s splits and overlays.

Geographically, the area code includes notable areas such as Arlington, Alexandria, and Falls Church, and extends to parts of Prince William and Loudoun Counties. The region's proximity to the nation's capital influences its telecommunications infrastructure, leading to high call volumes and a blend of residential and business-focused services.

In 1995, due to increased demand for telephone numbers, area code 703 underwent a split, resulting in the creation of area code 571 to accommodate the growing population and the rise of mobile and internet services. As a result, both area codes now serve overlapping regions, making dialing increasingly complex with the need for ten-digit dialing prevalent since 2000.

Telecommunications in area code 703 reflect broader trends in the industry, with significant investment in fiber-optic networks and the growth of VoIP (Voice over Internet Protocol) technologies. This evolution accommodates the dynamic demands of a population that includes government employees, technology professionals, and a diverse commercial base.

As one of the key telecommunication hubs in the region, area code 703 continues to adapt to technological advancements, maintaining robust connectivity within its jurisdiction and beyond.