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Phone Directory 312-949 Detail

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Illinois Chicago Central

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Example: (312) 949-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-949 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-9490###
312-9491###
312-9492###
312-9493###
312-9494###
312-9495###
312-9496###
312-9497###
312-9498###
312-9499###