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Phone Directory 301-388 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-388 Silver Spring, MD Verizon Maryland Montgomery Landline 10/11/1997

Other Series For Prefixes

301-3880###
301-3881###
301-3882###
301-3883###
301-3884###
301-3885###
301-3886###
301-3887###
301-3888###
301-3889###