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Phone Directory 301-380 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Example: (301) 380-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-380 Rockville, MD Verizon Maryland Montgomery Landline 02/04/1994

Other Series For Prefixes

301-3800###
301-3801###
301-3802###
301-3803###
301-3804###
301-3805###
301-3806###
301-3807###
301-3808###
301-3809###