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Phone Directory 301-309 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-309 Rockville, MD Verizon Maryland Montgomery Landline 02/04/1994

Other Series For Prefixes

301-3090###
301-3091###
301-3092###
301-3093###
301-3094###
301-3095###
301-3096###
301-3097###
301-3098###
301-3099###