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Phone Directory 312-817 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-817 Chicago, IL Ameritech Illinois Cook Landline 02/11/1995

Other Series For Prefixes

312-8170###
312-8171###
312-8172###
312-8173###
312-8174###
312-8175###
312-8176###
312-8177###
312-8178###
312-8179###