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Phone Directory 312-828 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 828-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-828 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-8280###
312-8281###
312-8282###
312-8283###
312-8284###
312-8285###
312-8286###
312-8287###
312-8288###
312-8289###