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Phone Directory 301-810 Detail

State Major City Time Zone
Maryland Baltimore Eastern

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Example: (301) 810-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
301-810 Monrovia, MD AT&T Local Frederick Landline 08/14/1998

Other Series For Prefixes

301-8100###
301-8101###
301-8102###
301-8103###
301-8104###
301-8105###
301-8106###
301-8107###
301-8108###
301-8109###