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Phone Directory 312-223 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-223 Chicago, IL Ameritech Illinois Cook Landline 10/11/1997

Other Series For Prefixes

312-2230###
312-2231###
312-2232###
312-2233###
312-2234###
312-2235###
312-2236###
312-2237###
312-2238###
312-2239###