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Phone Directory 301-623 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-623 Mount Rainier, MD Teleport Communications America - DC Prince Georges Landline 10/11/1997

Other Series For Prefixes

301-6230###
301-6231###
301-6232###
301-6233###
301-6234###
301-6235###
301-6236###
301-6237###
301-6238###
301-6239###