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Phone Directory 312-633 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-633 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-6330###
312-6331###
312-6332###
312-6333###
312-6334###
312-6335###
312-6336###
312-6337###
312-6338###
312-6339###