The 312 Area Code (or Area Code 312) is located in the state of MO. Area Code 312 is one of the 269 3-digit telephone area codes in the USA. It covers roughly 1.63 million unique phone numbers and 5.08 million individuals near the city of Saint Louis
Area code 312 was put into service. In 1989 Area code 312 was split to form area code 708. In 1996 area code 312 was split again to form area code 773. In 2009 area code 312 was overlaid with area code 872.
Chicago, Hinsdale, La Grange Park, Northbrook, Roselle, Wheeling.
PREFIX | COUNTY | CITY | CARRIER | TYPE |
---|---|---|---|---|
312-745 | Cook | Chicago | Ameritech Illinois | Landline |
312-746 | Cook | Chicago | Ameritech Illinois | Landline |
312-747 | Cook | Chicago | Ameritech Illinois | Landline |
312-748 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-749 | DuPage | Hinsdale | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-750 | Cook | Chicago | Ameritech Illinois | Landline |
312-751 | Cook | Chicago | Ameritech Illinois | Landline |
312-752 | Cook | Chicago | Broadwing Communications, Llc - IL | Landline |
312-753 | Cook | Chicago | Rcn Telecom Services Of Illinois, Inc. - IL | Landline |
312-754 | Cook | Chicago | Level 3 Telecom Of Illinois, Llc - IL | Landline |
312-755 | Cook | Chicago | Ameritech Illinois | Landline |
312-756 | Cook | Chicago | Ameritech Illinois | Landline |
312-757 | Cook | Chicago | Getgo Communications Llc - IL | Landline |
312-758 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-759 | Cook | Chicago | Ameritech Illinois | Landline |
312-760 | Cook | Chicago | American Messaging Services, Llc | Wireless |
312-762 | Cook | Chicago | Ameritech Illinois | Landline |
312-765 | Cook | Chicago | Ameritech Illinois | Landline |
312-768 | Cook | Chicago | At&t Local | Landline |
312-769 | Cook | Chicago | Indiana Paging Ntwk | Wireless |
312-770 | Cook | Chicago | Ameritech Illinois | Landline |
312-771 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-772 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-775 | Cook | Chicago | Ameritech Illinois | Landline |
312-777 | Cook | Chicago | Teleport Communications America, Llc - IL | Landline |
312-780 | Cook | Chicago | Mci Worldcom Communications, Inc. - IL | Landline |
312-781 | Cook | Chicago | Ameritech Illinois | Landline |
312-782 | Cook | Chicago | Ameritech Illinois | Landline |
312-784 | Cook | Chicago | First Communications Llc - IL | Landline |
312-786 | Cook | Chicago | Ameritech Illinois | Landline |
312-787 | Cook | Chicago | Ameritech Illinois | Landline |
312-788 | Cook | Chicago | Ameritech Illinois | Landline |
312-789 | Cook | Chicago | Ameritech Illinois | Landline |
312-790 | Cook | Chicago | Ameritech Illinois | Wireless |
312-791 | Cook | Chicago | Ameritech Illinois | Landline |
312-793 | Cook | Chicago | Ameritech Illinois | Landline |
312-794 | Cook | Chicago | Rcn Telecom Services Of Illinois, Inc. - IL | Landline |
312-795 | Cook | Chicago | Ameritech Illinois | Landline |
312-797 | Cook | Chicago | Ameritech Illinois | Landline |
312-798 | Cook | Chicago | Ameritech Illinois | Landline |
312-799 | Cook | Chicago | Ameritech Illinois | Landline |
312-800 | Cook | Chicago | Peerless Network Of Illinois, Llc - IL | Landline |
312-801 | Cook | Chicago | 365 Wireless, Llc | Wireless |
312-802 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-803 | Cook | Chicago | Mci Worldcom Communications, Inc. - IL | Landline |
312-804 | Cook | Chicago | T-Mobile Usa, Inc. | Wireless |
312-805 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-806 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-807 | Cook | Chicago | Ameritech Illinois | Landline |
312-808 | Cook | Chicago | Ameritech Illinois | Landline |
312-810 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-812 | Cook | Chicago | Ameritech Illinois | Wireless |
312-813 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-814 | Cook | Chicago | Ameritech Illinois | Landline |
312-816 | DuPage | Hinsdale | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-817 | Cook | Chicago | Ameritech Illinois | Landline |
312-819 | Cook | Chicago | Ameritech Illinois | Landline |
312-820 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-821 | Cook | Chicago | Mci Worldcom Communications, Inc. - IL | Landline |
312-822 | Cook | Chicago | Ameritech Illinois | Landline |
312-823 | Cook | Chicago | Ameritech Illinois | Landline |
312-827 | Cook | Chicago | Ameritech Illinois | Landline |
312-828 | Cook | Chicago | Ameritech Illinois | Landline |
312-829 | Cook | Chicago | Ameritech Illinois | Landline |
312-830 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-831 | Cook | Chicago | Ameritech Illinois | Landline |
312-832 | Cook | Chicago | Ameritech Illinois | Landline |
312-833 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-834 | Cook | Chicago | Ameritech Illinois | Landline |
312-835 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
Phone Number 312-535-6971 |
USAGE Wireless |
City Chicago |
Operate Read more about who called from 3125356971 |
Update Time Mar-20-2024 |
Phone Number 312-325-0621 |
USAGE Landline |
City Chicago |
Operate Read more about who called from 3123250621 |
Update Time Mar-20-2024 |
Phone Number 312-332-7119 |
USAGE Landline |
City Chicago |
Operate Read more about who called from 3123327119 |
Update Time Mar-20-2024 |
Phone Number 312-225-5555 |
USAGE Landline |
City Chicago |
Operate Read more about who called from 3122255555 |
Update Time Mar-20-2024 |
Phone Number 312-500-4314 |
USAGE Landline |
City Chicago |
Operate Read more about who called from 3125004314 |
Update Time Mar-20-2024 |
Phone Number 312-380-4033 |
USAGE Landline |
City Chicago |
Operate Read more about who called from 3123804033 |
Update Time Mar-19-2024 |
Phone Number 312-818-5250 |
USAGE Landline |
City Chicago |
Operate Read more about who called from 3128185250 |
Update Time Dec-27-2023 |
Phone Number 312-632-6812 |
USAGE Landline |
City Chicago |
Operate Read more about who called from 3126326812 |
Update Time Dec-26-2023 |
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