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Phone Directory 312-620 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 620-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-620 Chicago, IL Bandwidth.com Clec Cook Landline 08/15/2012

Other Series For Prefixes

312-6200###
312-6201###
312-6202###
312-6203###
312-6204###
312-6205###
312-6206###
312-6207###
312-6208###
312-6209###