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Phone Directory 312-786 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 786-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-786 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-7860###
312-7861###
312-7862###
312-7863###
312-7864###
312-7865###
312-7866###
312-7867###
312-7868###
312-7869###