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Phone Directory 240-450 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
240-450 Silver Spring, MD Cavalier Telephone Mid-atlantic Montgomery Landline 08/20/2000

Other Series For Prefixes

240-4500###
240-4501###
240-4502###
240-4503###
240-4504###
240-4505###
240-4506###
240-4507###
240-4508###
240-4509###