What is 571 area code?

The 571 area code is an area code in Northern Virginia, in the United States. It was established to provide numbering relief for the rapidly growing region surrounding Washington, D.C. Here are some key points about the 571 area code:

1. Overlay Area Code: The 571 area code is an overlay for the 703 area code, which means it covers the same geographic area. The overlay was introduced on March 1, 2000, to ensure a sufficient supply of telephone numbers.

2. Geographic Coverage: The 571 area code serves several counties in Northern Virginia, including parts of Arlington, Fairfax, Loudoun, Prince William, and the independent cities of Alexandria, Fairfax, Falls Church, Manassas, and Manassas Park.

3. Dialing: Due to the overlay, ten-digit dialing (area code + seven-digit number) is mandatory for local calls within this region.

4. Time Zone: The 571 area code is in the Eastern Time Zone.

5. Major Cities: Some of the major communities served by the 571 area code include Arlington, Alexandria, McLean, Reston, and Tysons.

The introduction of the 571 area code helped accommodate the increasing number of businesses, government agencies, and residents in this economically significant region.