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Phone Directory 312-913 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-913 Chicago, IL Ameritech Illinois Cook Landline 10/11/1997

Other Series For Prefixes

312-9130###
312-9131###
312-9132###
312-9133###
312-9134###
312-9135###
312-9136###
312-9137###
312-9138###
312-9139###