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Phone Directory 312-422 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 422-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-422 Chicago, IL Ameritech Illinois Cook Landline 11/11/2003

Other Series For Prefixes

312-4220###
312-4221###
312-4222###
312-4223###
312-4224###
312-4225###
312-4226###
312-4227###
312-4228###
312-4229###