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Phone Directory 312-905 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-905 Chicago, IL Ameritech Illinois Cook Landline 11/11/2003

Other Series For Prefixes

312-9050###
312-9051###
312-9052###
312-9053###
312-9054###
312-9055###
312-9056###
312-9057###
312-9058###
312-9059###