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Phone Directory 312-827 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 827-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-827 Chicago, IL Ameritech Illinois Cook Landline 09/11/1994

Other Series For Prefixes

312-8270###
312-8271###
312-8272###
312-8273###
312-8274###
312-8275###
312-8276###
312-8277###
312-8278###
312-8279###