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Phone Directory 312-492 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-492 Chicago, IL Ameritech Illinois Cook Landline 07/06/1997

Other Series For Prefixes

312-4920###
312-4921###
312-4922###
312-4923###
312-4924###
312-4925###
312-4926###
312-4927###
312-4928###
312-4929###