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Phone Directory 312-733 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-733 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-7330###
312-7331###
312-7332###
312-7333###
312-7334###
312-7335###
312-7336###
312-7337###
312-7338###
312-7339###