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Phone Directory 312-705 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-705 Chicago, IL Teleport Communications America Cook Landline 02/04/1994

Other Series For Prefixes

312-7050###
312-7051###
312-7052###
312-7053###
312-7054###
312-7055###
312-7056###
312-7057###
312-7058###
312-7059###