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Phone Directory 312-984 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 984-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-984 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-9840###
312-9841###
312-9842###
312-9843###
312-9844###
312-9845###
312-9846###
312-9847###
312-9848###
312-9849###