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Phone Directory 773-990 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (773) 990-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
773-990 Chicago, IL Ameritech Illinois Cook Landline 03/20/2006

Other Series For Prefixes

773-9900###
773-9901###
773-9902###
773-9903###
773-9904###
773-9905###
773-9906###
773-9907###
773-9908###
773-9909###