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Phone Directory 312-587 Detail

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Illinois Chicago Central

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Example: (312) 587-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-587 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-5870###
312-5871###
312-5872###
312-5873###
312-5874###
312-5875###
312-5876###
312-5877###
312-5878###
312-5879###