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Phone Directory 301-663 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-663 Frederick, MD Verizon Maryland Frederick Landline 02/04/1994

Other Series For Prefixes

301-6630###
301-6631###
301-6632###
301-6633###
301-6634###
301-6635###
301-6636###
301-6637###
301-6638###
301-6639###