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Phone Directory 312-373 Detail

State Major City Time Zone
Illinois Chicago Central

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Example: (312) 373-5555 or 2012145555

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Area Code Prefixes

Prefix Primary City Company County Usage Introduced
312-373 Chicago, IL Broadwing Communications Cook Landline 05/10/1999

Other Series For Prefixes

312-3730###
312-3731###
312-3732###
312-3733###
312-3734###
312-3735###
312-3736###
312-3737###
312-3738###
312-3739###