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Phone Directory 301-287 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-287 Rockville, MD Mci Worldcom Communications Montgomery Landline 01/11/1997

Other Series For Prefixes

301-2870###
301-2871###
301-2872###
301-2873###
301-2874###
301-2875###
301-2876###
301-2877###
301-2878###
301-2879###