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Phone Directory 815-991 Detail

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Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
815-991 Sycamore, IL Essex Telcom Dekalb Landline 06/13/2000

Other Series For Prefixes

815-9910###
815-9911###
815-9912###
815-9913###
815-9914###
815-9915###
815-9916###
815-9917###
815-9918###
815-9919###