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Phone Directory 312-727 Detail

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Illinois Chicago Central

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Example: (312) 727-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-727 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-7270###
312-7271###
312-7272###
312-7273###
312-7274###
312-7275###
312-7276###
312-7277###
312-7278###
312-7279###