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Phone Directory 773-439 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
773-439 Chicago, IL Rcn Telecom Services Of Illinois Cook Landline 07/22/1999

Other Series For Prefixes

773-4390###
773-4391###
773-4392###
773-4393###
773-4394###
773-4395###
773-4396###
773-4397###
773-4398###
773-4399###