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Phone Directory 312-917 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-917 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-9170###
312-9171###
312-9172###
312-9173###
312-9174###
312-9175###
312-9176###
312-9177###
312-9178###
312-9179###