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Phone Directory 301-230 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Example: (301) 230-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-230 Rockville, MD Verizon Maryland Montgomery Landline 02/04/1994

Other Series For Prefixes

301-2300###
301-2301###
301-2302###
301-2303###
301-2304###
301-2305###
301-2306###
301-2307###
301-2308###
301-2309###