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Phone Directory 815-899 Detail

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Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
815-899 Sycamore, IL Frontier North Dekalb Landline 02/04/1994

Other Series For Prefixes

815-8990###
815-8991###
815-8992###
815-8993###
815-8994###
815-8995###
815-8996###
815-8997###
815-8998###
815-8999###