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Phone Directory 312-430 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-430 Chicago, IL Ameritech Illinois Cook Landline 05/02/2004

Other Series For Prefixes

312-4300###
312-4301###
312-4302###
312-4303###
312-4304###
312-4305###
312-4306###
312-4307###
312-4308###
312-4309###