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Phone Directory 312-499 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 499-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-499 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-4990###
312-4991###
312-4992###
312-4993###
312-4994###
312-4995###
312-4996###
312-4997###
312-4998###
312-4999###