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Phone Directory 312-879 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-879 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-8790###
312-8791###
312-8792###
312-8793###
312-8794###
312-8795###
312-8796###
312-8797###
312-8798###
312-8799###