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Phone Directory 312-679 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 679-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-679 Chicago, IL American Messaging (am) Cook Cell Number 04/23/2001

Other Series For Prefixes

312-6790###
312-6791###
312-6792###
312-6793###
312-6794###
312-6795###
312-6796###
312-6797###
312-6798###
312-6799###