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Phone Directory 312-337 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 337-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-337 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-3370###
312-3371###
312-3372###
312-3373###
312-3374###
312-3375###
312-3376###
312-3377###
312-3378###
312-3379###