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Phone Directory 312-235 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-235 Chicago, IL Ameritech Illinois Cook Landline 01/14/2000

Other Series For Prefixes

312-2350###
312-2351###
312-2352###
312-2353###
312-2354###
312-2355###
312-2356###
312-2357###
312-2358###
312-2359###