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Phone Directory 312-631 Detail

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Illinois Chicago Central

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Example: (312) 631-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-631 Chicago, IL Centurylink Communications LLC Cook Landline 01/11/2013

Other Series For Prefixes

312-6310###
312-6311###
312-6312###
312-6313###
312-6314###
312-6315###
312-6316###
312-6317###
312-6318###
312-6319###