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Area code 571

Area code 571 Herndon, Virginia

Area code 571 is in Virginia, with numbers assigned in Herndon, Leesburg, Manassas and 10 more places. It’s 12:11 AM there now.

State
Virginia10 area codes in Virginia
Time zone
Eastern12:11 AM there now
Exchanges
63513 places
Overlay
703Same area, 10-digit dialing
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Where area code 571 is

Numbers in 571 are assigned to 13 places in 4 counties: Loudoun County, Fairfax County, Prince William County and Manassas city.

No single place dominates: Herndon, the largest, has 12% of the exchanges.

  • Herndon74
  • Leesburg48
  • Manassas41
  • Dale City29
  • Occoquan21
  • Triangle15
  • Braddock15
  • Haymarket13
  • Arcola11
  • Lorton7
  • Dulles Town Center7
  • Independent Hill6
  • Nokesville5

Phone companies in 571

635 blocks of numbers in 571 are held by 36 phone companies. The most belong to T-Mobile (130), AT&T Mobility (90) and Verizon Wireless (75).

A large share, about 43%, belongs to competitive and internet phone carriers; wireless networks hold 46% and local phone and cable companies 10%.

A block’s holder is the company it was first assigned to; numbers can move to other carriers since.

History and overlays

571 went into service in 2000, added to the area of 703.

703 (since 1947) shares the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.

196 new exchanges were assigned since 2021, the latest in October 2026.

Calling 571

It’s 12:11 AM Eastern time in 571 right now.

From elsewhere in the U.S., dial 1, 571 and the 7-digit number; inside the area, all 10 digits too.

Nearby area codes

Virginia has 10 area codes: 276, 434, 540, 571, 686, 703, 757, 804, 826 and 948.

From the North American Numbering Plan Administrator’s area code and exchange records (10/22/2026) and U.S. Census place and county names. Places and companies are where number blocks were assigned, not where anyone lives or which carrier a number uses today.

Map of the 571 area code

Map of the 571 area code around Herndon, Leesburg and Manassas, Virginia.

Interactive map © OpenStreetMap contributors

Cities on the map

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Questions about 571

Where is area code 571?

In Virginia, covering Herndon, Leesburg and Manassas and other places across 4 counties.

What time zone is 571 in?

Eastern time. It was 12:11 AM there when this page loaded.

Is 571 an overlay?

Yes. 703 serves the same area, so dial all 10 digits for local calls.

Which phone companies have 571 numbers?

36 companies hold blocks; the most belong to T-Mobile, AT&T Mobility and Verizon Wireless. About 46% of blocks are wireless.

Is 571 running out of numbers?

Not on record. 196 new exchanges have been assigned since 2021.