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Phone Directory 312-384 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 384-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-384 Chicago, IL Ameritech Illinois Cook Landline 10/13/1999

Other Series For Prefixes

312-3840###
312-3841###
312-3842###
312-3843###
312-3844###
312-3845###
312-3846###
312-3847###
312-3848###
312-3849###