City of Washington


301 Area code: Washington, District of Columbia - 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).

  • 3018288000 | +1 301-828-8000 Maryland U.S.A.
  • 3018288001 | +1 301-828-8001 Maryland U.S.A.
  • 3018288002 | +1 301-828-8002 Maryland U.S.A.
  • 3018288003 | +1 301-828-8003 Maryland U.S.A.
  • 3018288004 | +1 301-828-8004 Maryland U.S.A.
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  • 3018288011 | +1 301-828-8011 Maryland U.S.A.
  • 3018288012 | +1 301-828-8012 Maryland U.S.A.
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