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Phone Directory 773-857 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
773-857 Chicago, IL Rcn Telecom Services Of Illinois Cook Landline 11/20/1998

Other Series For Prefixes

773-8570###
773-8571###
773-8572###
773-8573###
773-8574###
773-8575###
773-8576###
773-8577###
773-8578###
773-8579###