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Phone Directory 773-821 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
773-821 Chicago, IL Ameritech Illinois Cook Landline 10/15/1996

Other Series For Prefixes

773-8210###
773-8211###
773-8212###
773-8213###
773-8214###
773-8215###
773-8216###
773-8217###
773-8218###
773-8219###