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Phone Directory 301-240 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Example: (301) 240-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-240 Gaithersburg, MD Verizon Maryland Montgomery Landline 02/04/1994

Other Series For Prefixes

301-2400###
301-2401###
301-2402###
301-2403###
301-2404###
301-2405###
301-2406###
301-2407###
301-2408###
301-2409###