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Phone Directory 312-298 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 298-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-298 Chicago, IL Sigecom Cook Landline 07/22/1999

Other Series For Prefixes

312-2980###
312-2981###
312-2982###
312-2983###
312-2984###
312-2985###
312-2986###
312-2987###
312-2988###
312-2989###