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Phone Directory 312-302 Detail

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Illinois Chicago Central

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Example: (312) 302-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-302 Chicago, IL Ameritech Illinois Cook Landline 02/04/1994

Other Series For Prefixes

312-3020###
312-3021###
312-3022###
312-3023###
312-3024###
312-3025###
312-3026###
312-3027###
312-3028###
312-3029###