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Phone Directory 815-300 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (815) 300-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
815-300 Chicago, IL Ameritech Illinois Cook Landline 12/22/2010

Other Series For Prefixes

815-3000###
815-3001###
815-3002###
815-3003###
815-3004###
815-3005###
815-3006###
815-3007###
815-3008###
815-3009###