Area Code 312-800 : Area Code 312-899

Reverse Lookup Detail for Area Code 312 8xx

Area code 312 covers part of Illinoisstate, covering most of Cook, Dupage counties. It was started on Jan 01, 2000. This region follows US/Central + Daylight Savings timezone. Other popular area codes that belong to Illinois state include 217, 224, 309, 331, 618, 630, 708, 773, 779, 815, 847, 872.

Verified changes in Area Code 312 8XX

Area Code 312-800 - Area Code 312-899 (Covers 312 8xx xxxx phone numbers)

Recent Free Phone Number Reviews in Area Code 312 8xx

Verified phone numbers in Area Code 312

Map for area code 312 8xx  Zoom

Current Time in 312-8 Area Code

312 Area Code

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Illinois Area Codes Directory

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312 Area Code Finder

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Illinois Area Code Lookup

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Telephone/Landline Area Codes

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Free Area Codes Locator for Illinois

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312 Area Code Reviews

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Telephone Area Codes in Illinois

The telephone area code prefixes local phone numbers & is not required to be dialed. For area codes by city, search VerifyPhone.com. Area codes telephone differ from region to region, and in some places the area code must be dialed even when calling locally within that region. Find out more with area code decoder.

External links & resources for area code 312 in Illinois