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Phone Directory 312-945 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-945 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-9450###
312-9451###
312-9452###
312-9453###
312-9454###
312-9455###
312-9456###
312-9457###
312-9458###
312-9459###