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Phone Directory 312-404 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 404-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-404 Chicago, IL T-mobile Usa Cook Cell Number 10/14/2002

Other Series For Prefixes

312-4040###
312-4041###
312-4042###
312-4043###
312-4044###
312-4045###
312-4046###
312-4047###
312-4048###
312-4049###