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Phone Directory 240-378 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Example: (240) 378-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
240-378 Cumberland, MD Core Communications Allegany Landline 10/31/2000

Other Series For Prefixes

240-3780###
240-3781###
240-3782###
240-3783###
240-3784###
240-3785###
240-3786###
240-3787###
240-3788###
240-3789###