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 |
---|---|---|---|---|
312-583 | Cook | Chicago | Ameritech Illinois | Landline |
312-585 | Cook | Chicago | Mcimetro Access Transmission Services Llc | Landline |
312-587 | Cook | Chicago | Ameritech Illinois | Landline |
312-588 | Cook | Chicago | Ameritech Illinois | Landline |
312-589 | Cook | Chicago | Ameritech Illinois | Landline |
312-590 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-591 | Cook | Chicago | Ameritech Illinois | Landline |
312-592 | Cook | Chicago | Ameritech Illinois | Landline |
312-593 | Cook | Chicago | T-Mobile Usa, Inc. | Wireless |
312-594 | Cook | Chicago | Mcimetro Access Transmission Services Llc | Landline |
312-595 | Cook | Chicago | Ameritech Illinois | Landline |
312-596 | Cook | Chicago | Teleport Communications America, Llc - IL | Landline |
312-600 | Cook | Chicago | Neutral Tandem-Illinois, Llc - IL | Landline |
312-601 | Cook | Chicago | Mcimetro Access Transmission Services Llc | Landline |
312-602 | Cook | Chicago | Broadwing Communications, Llc - IL | Landline |
312-603 | Cook | Chicago | Ameritech Illinois | Landline |
312-604 | Cook | Chicago | Xo Illinois, Inc. | Landline |
312-605 | Cook | Chicago | Ovation Communications Of Illinois, Inc. | Landline |
312-606 | Cook | Chicago | Ameritech Illinois | Landline |
312-607 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-608 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-609 | Cook | Chicago | Ameritech Illinois | Landline |
312-610 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-612 | Cook | Chicago | Ameritech Illinois | Landline |
312-613 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-614 | Cook | Chicago | Ameritech Illinois | Landline |
312-615 | Cook | Wheeling | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-616 | Cook | Chicago | Ameritech Illinois | Landline |
312-617 | Cook | Chicago | Sprint Spectrum L.p. | Wireless |
312-618 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-619 | Cook | Chicago | T-Mobile Usa, Inc. | Wireless |
312-620 | Cook | Chicago | Bandwidth.com Clec, Llc - IL | Landline |
312-621 | Cook | Chicago | Ameritech Illinois | Landline |
312-622 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-623 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-624 | Cook | Chicago | Rcn Telecom Services Of Illinois, Inc. - IL | Landline |
312-625 | Cook | Chicago | Level 3 Communications, Llc - IL | Landline |
312-626 | Cook | Chicago | Neutral Tandem-Illinois, Llc | Landline |
312-627 | Cook | Chicago | Ameritech Illinois | Landline |
312-628 | Cook | Chicago | Xo Illinois, Inc. | Landline |
312-629 | Cook | Chicago | Ameritech Illinois | Landline |
312-630 | Cook | Chicago | Ameritech Illinois | Landline |
312-631 | Cook | Chicago | Centurylink Communications Llc | Landline |
312-632 | Cook | Chicago | Ameritech Illinois | Landline |
312-633 | Cook | Chicago | Ameritech Illinois | Landline |
312-634 | Cook | Chicago | Ameritech Illinois | Landline |
312-635 | Cook | Chicago | Global Crossing Local Services, Inc.-Il | Landline |
312-636 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-637 | Cook | Chicago | Broadwing Communications, Llc - IL | Landline |
312-638 | Cook | Chicago | Broadwing Communications, Llc - IL | Landline |
312-639 | Not available. | Not available. | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-640 | Cook | Chicago | Ameritech Illinois | Landline |
312-641 | Cook | Chicago | Ameritech Illinois | Landline |
312-642 | Cook | Chicago | Ameritech Illinois | Landline |
312-643 | Cook | Chicago | Rcn Telecom Services Of Illinois, Inc. - IL | Landline |
312-644 | Cook | Chicago | Ameritech Illinois | Landline |
312-645 | Cook | Chicago | Ameritech Illinois | Landline |
312-646 | Cook | Chicago | Broadwing Communications, Llc - IL | Landline |
312-647 | Cook | Chicago | T-Mobile Usa, Inc. | Wireless |
312-648 | Cook | Chicago | Ameritech Illinois | Landline |
312-649 | Cook | Chicago | Ameritech Illinois | Landline |
312-650 | Cook | Chicago | Rcn Telecom Services Of Illinois, Inc. - IL | Landline |
312-651 | Cook | Chicago | Ameritech Illinois | Landline |
312-652 | Cook | Chicago | Ameritech Illinois | Landline |
312-653 | Cook | Chicago | Ameritech Illinois | Landline |
312-654 | Cook | Chicago | Ameritech Illinois | Landline |
312-655 | Cook | Chicago | Ameritech Illinois | Landline |
312-656 | Cook | Chicago | Sprint Spectrum L.p. | Wireless |
312-657 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-658 | Cook | Chicago | Ameritech Illinois | Landline |
Phone Number 312-535-6971 |
USAGE Landline |
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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