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Phone Directory 312-979 Detail

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Illinois Chicago Central

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Example: (312) 979-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-979 Chicago, IL Ameritech Illinois Cook Cell Number 02/04/1994

Other Series For Prefixes

312-9790###
312-9791###
312-9792###
312-9793###
312-9794###
312-9795###
312-9796###
312-9797###
312-9798###
312-9799###