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Phone Directory 312-433 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 433-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-433 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-4330###
312-4331###
312-4332###
312-4333###
312-4334###
312-4335###
312-4336###
312-4337###
312-4338###
312-4339###