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Phone Directory 312-747 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 747-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-747 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-7470###
312-7471###
312-7472###
312-7473###
312-7474###
312-7475###
312-7476###
312-7477###
312-7478###
312-7479###