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Phone Directory 301-528 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Example: (301) 528-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-528 Gaithersburg, MD Verizon Maryland Montgomery Landline 08/14/1998

Other Series For Prefixes

301-5280###
301-5281###
301-5282###
301-5283###
301-5284###
301-5285###
301-5286###
301-5287###
301-5288###
301-5289###