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Phone Directory 301-330 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Example: (301) 330-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-330 Gaithersburg, MD Verizon Maryland Montgomery Landline 02/04/1994

Other Series For Prefixes

301-3300###
301-3301###
301-3302###
301-3303###
301-3304###
301-3305###
301-3306###
301-3307###
301-3308###
301-3309###