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Area Code Lookup

Area Code 312 Phone Lookup

Illinois, United States. Explore phone prefixes, caller activity, exchange details, and community reports connected to this area code.

687prefix records
58lookup pages
312area code

Phone Prefixes in This Area Code

Each prefix groups related phone numbers by exchange, location, carrier, and line type.

Landline

(312) 379

CityChicago
CountyCook
CarrierOvation Communications Of Illinois Inc.
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Wireless

(312) 388

CityLombard
CountyDuPage
CarrierUnited States Cellular Corp. - Illinois
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