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Phone Directory 301-644 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Example: (301) 644-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-644 Frederick, MD Verizon Maryland Frederick Landline 08/14/1998

Other Series For Prefixes

301-6440###
301-6441###
301-6442###
301-6443###
301-6444###
301-6445###
301-6446###
301-6447###
301-6448###
301-6449###