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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.

Wireless

(312) 231

CitySchaumburg
CountyCook
CarrierNew Cingular Wireless Pcs Llc - Il
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Wireless

(312) 237

CityHickory Hills
CountyCook
CarrierCellco Partnership Dba Verizon Wireless - Il
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Landline

(312) 238

CityArlington Heights
CountyCook
CarrierBroadwing Communications Llc - Il
View Prefix