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Phone Directory 312-407 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-407 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-4070###
312-4071###
312-4072###
312-4073###
312-4074###
312-4075###
312-4076###
312-4077###
312-4078###
312-4079###