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Phone Directory 312-938 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-938 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-9380###
312-9381###
312-9382###
312-9383###
312-9384###
312-9385###
312-9386###
312-9387###
312-9388###
312-9389###