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Phone Directory 773-473 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (773) 473-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
773-473 Chicago, IL Ameritech Illinois Cook Landline 10/15/1996

Other Series For Prefixes

773-4730###
773-4731###
773-4732###
773-4733###
773-4734###
773-4735###
773-4736###
773-4737###
773-4738###
773-4739###