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Phone Directory 312-279 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-279 Chicago, IL Mcimetro Access Transmission Services LLC Cook Landline 01/25/1998

Other Series For Prefixes

312-2790###
312-2791###
312-2792###
312-2793###
312-2794###
312-2795###
312-2796###
312-2797###
312-2798###
312-2799###