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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) 635

CityChicago
CountyCook
CarrierGlobal Crossing Local Services Inc.-il
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Wireless

(312) 636

CityElgin
CountyKane
CarrierCellco Partnership Dba Verizon Wireless - Il
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Landline

(312) 643

CityChicago
CountyCook
CarrierRcn Telecom Services Of Illinois Inc. - Il
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