Area Code 312

Area Code 312 information.

Area Code 312 Details
Country	United States
State/Province	Illinois
Major City	Chicago
Time Zone	Central (UTC-06:00)

Area Code 312 Prefixes

Prefix	County	Phone Type	Status
312-727	Cook	Landline	Active
312-729	Cook	Landline	Active
312-730	Cook	Landline	Active
312-731	Cook	Landline	Active
312-732	Cook	Landline	Active
312-733	Cook	Landline	Active
312-735	Cook	Cell Number	Active
312-737	Cook	Landline	Active
312-738	Cook	Landline	Active
312-739	Cook	Landline	Active
312-740	Cook	Cell Number	Active
312-742	Cook	Landline	Active
312-743	Cook	Landline	Active
312-744	Cook	Landline	Active
312-745	Cook	Landline	Active
312-746	Cook	Landline	Active
312-747	Cook	Landline	Active
312-748	Cook	Cell Number	Active
312-749	Dupage	Cell Number	Active
312-750	Cook	Landline	Active

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