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Phone Directory 312-655 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 655-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-655 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-6550###
312-6551###
312-6552###
312-6553###
312-6554###
312-6555###
312-6556###
312-6557###
312-6558###
312-6559###