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Phone Directory 312-544 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-544 Chicago, IL Ameritech Illinois Cook Landline 06/13/2000

Other Series For Prefixes

312-5440###
312-5441###
312-5442###
312-5443###
312-5444###
312-5445###
312-5446###
312-5447###
312-5448###
312-5449###