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Phone Directory 312-477 Detail

State Major City Time Zone
Illinois Chicago Central

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-477 Chicago, IL Level 3 Communications Cook Cell Number 10/20/2010

Other Series For Prefixes

312-4770###
312-4771###
312-4772###
312-4773###
312-4774###
312-4775###
312-4776###
312-4777###
312-4778###
312-4779###