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Phone Directory 312-638 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 638-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-638 Chicago, IL Broadwing Communications Cook Landline 01/25/1998

Other Series For Prefixes

312-6380###
312-6381###
312-6382###
312-6383###
312-6384###
312-6385###
312-6386###
312-6387###
312-6388###
312-6389###