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Phone Directory 312-651 Detail

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Illinois Chicago Central

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Example: (312) 651-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-651 Chicago, IL Ameritech Illinois Cook Landline 01/25/1998

Other Series For Prefixes

312-6510###
312-6511###
312-6512###
312-6513###
312-6514###
312-6515###
312-6516###
312-6517###
312-6518###
312-6519###