CitysDirectory

City of Herndon

240 Area code: Herndon, Fairfax - Landline

Directory Numbers

How to dial a U.S. number internationally:

  • Start with your country's exit code (e.g., 011 for the U.S. or Canada).
  • Dial the U.S. country code (+1).
  • Dial the 10-digit phone number (area code + local number).

  • 2404031300 | +1 240-403-1300 Maryland U.S.A.
  • 2404031301 | +1 240-403-1301 Maryland U.S.A.
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  • 2404031371 | +1 240-403-1371 Maryland U.S.A.
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  • 2404031380 | +1 240-403-1380 Maryland U.S.A.
  • 2404031381 | +1 240-403-1381 Maryland U.S.A.
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  • 2404031398 | +1 240-403-1398 Maryland U.S.A.
  • 2404031399 | +1 240-403-1399 Maryland U.S.A.

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