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Phone Directory 312-650 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-650 Chicago, IL Rcn Telecom Services Of Illinois Cook Landline 01/25/1998

Other Series For Prefixes

312-6500###
312-6501###
312-6502###
312-6503###
312-6504###
312-6505###
312-6506###
312-6507###
312-6508###
312-6509###