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Phone Directory 312-641 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-641 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-6410###
312-6411###
312-6412###
312-6413###
312-6414###
312-6415###
312-6416###
312-6417###
312-6418###
312-6419###