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Phone Directory 312-790 Detail

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Illinois Chicago Central

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Example: (312) 790-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-790 Chicago, IL Ameritech Illinois Cook Cell Number 02/04/1994

Other Series For Prefixes

312-7900###
312-7901###
312-7902###
312-7903###
312-7904###
312-7905###
312-7906###
312-7907###
312-7908###
312-7909###