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Phone Directory 312-267 Detail

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Illinois Chicago Central

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Example: (312) 267-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-267 Chicago, IL Ameritech Illinois Cook Landline 06/13/2000

Other Series For Prefixes

312-2670###
312-2671###
312-2672###
312-2673###
312-2674###
312-2675###
312-2676###
312-2677###
312-2678###
312-2679###