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Phone Directory 312-930 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 930-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-930 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-9300###
312-9301###
312-9302###
312-9303###
312-9304###
312-9305###
312-9306###
312-9307###
312-9308###
312-9309###