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Phone Directory 312-239 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 239-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-239 Chicago, IL AT&T Local Cook Landline 01/25/1998

Other Series For Prefixes

312-2390###
312-2391###
312-2392###
312-2393###
312-2394###
312-2395###
312-2396###
312-2397###
312-2398###
312-2399###