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Phone Directory 312-234 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-234 Chicago, IL Ameritech Illinois Cook Landline 01/25/1998

Other Series For Prefixes

312-2340###
312-2341###
312-2342###
312-2343###
312-2344###
312-2345###
312-2346###
312-2347###
312-2348###
312-2349###