City of Columbia


410 Area code: Columbia, Howard - Wireless

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).

  • 4104282100 | +1 410-428-2100 Maryland U.S.A.
  • 4104282101 | +1 410-428-2101 Maryland U.S.A.
  • 4104282102 | +1 410-428-2102 Maryland U.S.A.
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  • 4104282110 | +1 410-428-2110 Maryland U.S.A.
  • 4104282111 | +1 410-428-2111 Maryland U.S.A.
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  • 4104282179 | +1 410-428-2179 Maryland U.S.A.
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