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Phone Directory 301-300 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Example: (301) 300-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-300 Bethesda, MD Cellco Partnership DBA Verizon Wireless Montgomery Cell Number 03/30/2007

Other Series For Prefixes

301-3000###
301-3001###
301-3002###
301-3003###
301-3004###
301-3005###
301-3006###
301-3007###
301-3008###
301-3009###