Landline
(312) 904
City: Chicago
County: Cook
Carrier: Ameritech Illinois
View PrefixArea Code 312 Phone Lookup
Illinois, United States
Explore phone numbers, prefixes, and caller activity in New Jersey. View detailed exchange information and community reports for this area code.
Available Prefixes in This Area
Each prefix represents a group of phone numbers tied to a specific carrier and location.
Landline
(312) 905
City: Chicago
County: Cook
Carrier: Ameritech Illinois
View PrefixLandline
(312) 906
City: Chicago
County: Cook
Carrier: Ameritech Illinois
View PrefixWireless
(312) 907
City: Buffalo Grove
County: Lake
Carrier: Sprint Spectrum L.p.
View PrefixLandline
(312) 908
City: Chicago
County: Cook
Carrier: Ameritech Illinois
View PrefixWireless
(312) 909
City: Elgin
County: Kane
Carrier: Cellco Partnership Dba Verizon Wireless - Il
View PrefixWireless
(312) 910
City: Hinsdale
County: DuPage
Carrier: Usa Mobility Wireless Inc.
View PrefixLandline
(312) 912
City: Chicago
County: Cook
Carrier: Ameritech Illinois
View PrefixLandline
(312) 913
City: Chicago
County: Cook
Carrier: Ameritech Illinois
View PrefixWireless
(312) 914
City: Elgin
County: Kane
Carrier: Cellco Partnership Dba Verizon Wireless - Il
View PrefixLandline
(312) 915
City: Chicago
County: Cook
Carrier: Ameritech Illinois
View PrefixLandline
(312) 916
City: Chicago
County: Cook
Carrier: American Messaging (am) Inc.
View Prefix