312 Area Code Lookup: Cities and Phone Numbers

Phone numbers in the 312 area code can be found in 7 cities or locations.

Those phone numbers can be found in the following cities or locations: Chicago, Hinsdale, La Grange Park, Northbrook, Roselle, Wheeling.

The carriers providing phone numbers in this area code are: 365 Wireless, AT&T Local, Access One, Allegiance Telecom, American Messaging (am), Ameritech Illinois, Bandwidth.com Clec, Broadvox-clec, Broadwing Communications, Cbeyond Communications, Cellco Partnership DBA Verizon Wireless, Centurylink Communications LLC, Cimco Communications, Citrix Communications LLC, Comcast Phone Of Illinois DBA Comco, Cricket Communications, First Communications LLC, Global Crossing Local Services-il, Indiana Paging Ntwk, Level 3 Communications, Mci Worldcom Communications, Mcimetro Access Transmission Services LLC, Metro PCS, Net Talk.com, Neutral Tandem-illinois, New Cingular Wireless PCS, Ovation Communications Of Illinois, Paetec Communications, Peerless Network Of Illinois, Pg Telecom Of Illinois Inc., Rclec, Rcn Telecom Services Of Illinois, Sigecom, Sprint Spectrum L.p., T-mobile Usa, Teleport Communications America, Tw Telecom Of Illinois LLC, United States Cellular Corp. - Illinois, Us Xchange Of Illinois LLC DBA Choice One Com, Usa Mobility Wireless, Xo Illinois, Ymax Communications Corp..