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Phone Directory 301-527 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-527 Gaithersburg, MD Verizon Maryland Montgomery Landline 02/11/1995

Other Series For Prefixes

301-5270###
301-5271###
301-5272###
301-5273###
301-5274###
301-5275###
301-5276###
301-5277###
301-5278###
301-5279###