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Phone Directory 312-592 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 592-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-592 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-5920###
312-5921###
312-5922###
312-5923###
312-5924###
312-5925###
312-5926###
312-5927###
312-5928###
312-5929###