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Phone Directory 312-253 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 253-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-253 Chicago, IL Allegiance Telecom Cook Landline 01/25/1998

Other Series For Prefixes

312-2530###
312-2531###
312-2532###
312-2533###
312-2534###
312-2535###
312-2536###
312-2537###
312-2538###
312-2539###