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Phone Directory 301-712 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Example: (301) 712-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-712 Frederick, MD Mci Worldcom Communications Frederick Landline 03/27/2005

Other Series For Prefixes

301-7120###
301-7121###
301-7122###
301-7123###
301-7124###
301-7125###
301-7126###
301-7127###
301-7128###
301-7129###