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Phone Directory 773-400 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
773-400 Chicago, IL American Messaging (am) Cook Cell Number 04/16/2001

Other Series For Prefixes

773-4000###
773-4001###
773-4002###
773-4003###
773-4004###
773-4005###
773-4006###
773-4007###
773-4008###
773-4009###