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Phone Directory 301-320 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-320 Glen Echo, MD Verizon Maryland Montgomery Landline 02/04/1994

Other Series For Prefixes

301-3200###
301-3201###
301-3202###
301-3203###
301-3204###
301-3205###
301-3206###
301-3207###
301-3208###
301-3209###