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Phone Directory 815-231 Detail

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Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
815-231 Rockford, IL Ameritech Illinois Winnebago Landline 09/11/1994

Other Series For Prefixes

815-2310###
815-2311###
815-2312###
815-2313###
815-2314###
815-2315###
815-2316###
815-2317###
815-2318###
815-2319###