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Phone Directory 312-814 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-814 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-8140###
312-8141###
312-8142###
312-8143###
312-8144###
312-8145###
312-8146###
312-8147###
312-8148###
312-8149###