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Phone Directory 312-663 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-663 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-6630###
312-6631###
312-6632###
312-6633###
312-6634###
312-6635###
312-6636###
312-6637###
312-6638###
312-6639###