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 |
---|---|---|---|---|
312-349 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-350 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-351 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-352 | DuPage | Hinsdale | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-353 | Cook | Chicago | Ameritech Illinois | Landline |
312-354 | DuPage | Roselle | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-355 | Cook | Chicago | Ameritech Illinois | Landline |
312-356 | Cook | Chicago | Ameritech Illinois | Landline |
312-357 | Cook | Chicago | Ameritech Illinois | Landline |
312-359 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-360 | Cook | Chicago | Ameritech Illinois | Landline |
312-361 | Cook | Chicago | Ameritech Illinois | Landline |
312-362 | Cook | Chicago | Ameritech Illinois | Landline |
312-363 | Cook | Chicago | Rcn Telecom Services Of Illinois, Inc. - IL | Landline |
312-364 | Cook | Chicago | Ameritech Illinois | Landline |
312-365 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-366 | Cook | La Grange Park | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-367 | Cook | La Grange Park | Usa Mobility Wireless, Inc. | Wireless |
312-368 | Cook | Chicago | Ameritech Illinois | Landline |
312-369 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-370 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-371 | Cook | Chicago | Sprint Spectrum L.p. | Wireless |
312-372 | Cook | Chicago | Ameritech Illinois | Landline |
312-373 | Cook | Chicago | Broadwing Communications, Llc - IL | Landline |
312-374 | Cook | Chicago | Ameritech Illinois | Landline |
312-375 | Cook | Chicago | T-Mobile Usa, Inc. | Wireless |
312-376 | Cook | Chicago | Cbeyond Communications, Llc - IL | Landline |
312-377 | Cook | Chicago | Xo Illinois, Inc. | Landline |
312-378 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-379 | Cook | Chicago | Ovation Communications Of Illinois, Inc. | Landline |
312-380 | Cook | Chicago | Ameritech Illinois | Landline |
312-381 | Cook | Chicago | Ameritech Illinois | Landline |
312-382 | Cook | Chicago | Ameritech Illinois | Landline |
312-384 | Cook | Chicago | Ameritech Illinois | Landline |
312-385 | Cook | Chicago | Ameritech Illinois | Landline |
312-386 | Cook | Chicago | Ameritech Illinois | Landline |
312-387 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-388 | Cook | Chicago | Sprint Spectrum L.p. | Wireless |
312-389 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-390 | Cook | Chicago | American Messaging Services, Llc | Wireless |
312-391 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-393 | Cook | Chicago | American Messaging Services, Llc | Wireless |
312-394 | Cook | Chicago | Ameritech Illinois | Landline |
312-395 | Cook | Chicago | At&t Local | Landline |
312-396 | Cook | Chicago | Ameritech Illinois | Landline |
312-397 | Cook | Chicago | Ameritech Illinois | Landline |
312-398 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-399 | Cook | Chicago | Sprint Spectrum L.p. | Wireless |
312-400 | Cook | Chicago | American Messaging Services, Llc | Wireless |
312-401 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-402 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-403 | Cook | La Grange Park | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-404 | Cook | Chicago | T-Mobile Usa, Inc. | Wireless |
312-405 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-406 | Cook | Wheeling | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-407 | Cook | Chicago | Ameritech Illinois | Landline |
312-408 | Cook | Chicago | Ameritech Illinois | Landline |
312-409 | Cook | Chicago | Ameritech Illinois | Landline |
312-410 | Cook | Chicago | Ameritech Illinois | Landline |
312-412 | Cook | Wheeling | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-413 | Cook | Chicago | Ameritech Illinois | Landline |
312-415 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-416 | Cook | Chicago | Mci Worldcom Communications, Inc. - IL | Landline |
312-417 | Cook | Chicago | Ameritech Illinois | Wireless |
312-418 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-419 | Cook | Chicago | Ameritech Illinois | Landline |
312-420 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-421 | Cook | Chicago | Ameritech Illinois | Landline |
312-422 | Cook | Chicago | Ameritech Illinois | Landline |
312-423 | Cook | Chicago | Broadwing Communications, Llc - IL | 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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