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Phone Directory 312-574 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 574-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-574 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-5740###
312-5741###
312-5742###
312-5743###
312-5744###
312-5745###
312-5746###
312-5747###
312-5748###
312-5749###