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Phone Directory 312-800 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-800 Chicago, IL Peerless Network Of Illinois Cook Landline 11/20/2012

Other Series For Prefixes

312-8000###
312-8001###
312-8002###
312-8003###
312-8004###
312-8005###
312-8006###
312-8007###
312-8008###
312-8009###