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Phone Directory 312-580 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-580 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-5800###
312-5801###
312-5802###
312-5803###
312-5804###
312-5805###
312-5806###
312-5807###
312-5808###
312-5809###