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 |
---|---|---|---|---|
312-275 | Cook | Chicago | Allegiance Telecom, Inc. - IL | Landline |
312-276 | Cook | Chicago | Allegiance Telecom, Inc. - IL | Landline |
312-277 | Cook | Chicago | Allegiance Telecom, Inc. - IL | Landline |
312-278 | Cook | Chicago | Broadwing Communications, Llc - IL | Landline |
312-279 | Cook | Chicago | Mcimetro Access Transmission Services Llc | Landline |
312-280 | Cook | Chicago | Ameritech Illinois | Landline |
312-281 | Cook | Chicago | Global Crossing Local Services, Inc.-Il | Landline |
312-282 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-283 | Cook | Chicago | Global Crossing Local Services, Inc.-Il | Landline |
312-284 | Cook | Chicago | Xo Illinois, Inc. | Landline |
312-285 | Cook | Chicago | Sprint Spectrum L.p. | Wireless |
312-286 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-287 | Cook | Chicago | Sprint Spectrum L.p. | Wireless |
312-288 | Cook | Chicago | Mcimetro Access Transmission Services Llc | Landline |
312-289 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-290 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-291 | Cook | Chicago | Ameritech Illinois | Landline |
312-292 | Cook | Chicago | Bandwidth.com Clec, Llc - IL | Wireless |
312-293 | Cook | Chicago | Ameritech Illinois | Landline |
312-294 | Cook | Chicago | Ameritech Illinois | Landline |
312-295 | Cook | La Grange Park | Usa Mobility Wireless, Inc. | Wireless |
312-296 | Cook | Chicago | Sprint Spectrum L.p. | Wireless |
312-297 | Cook | Chicago | Ameritech Illinois | Landline |
312-298 | Cook | Chicago | Sigecom, Llc Dba Wow Internet Cable And Phone | Landline |
312-299 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-300 | Cook | Chicago | Net Talk.com, Inc. - IL | Landline |
312-301 | DuPage | Hinsdale | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-302 | Cook | Chicago | Ameritech Illinois | Landline |
312-303 | Cook | Wheeling | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-304 | DuPage | Hinsdale | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-305 | Adams | Northbrook | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-306 | Cook | Chicago | Ameritech Illinois | Landline |
312-307 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-308 | Cook | Chicago | Ameritech Illinois | Landline |
312-309 | Cook | Chicago | Ameritech Illinois | Landline |
312-310 | Adams | Northbrook | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-314 | DuPage | Hinsdale | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-315 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-316 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-317 | Cook | Wheeling | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-318 | Cook | La Grange Park | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-320 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-321 | Cook | Chicago | Ameritech Illinois | Landline |
312-322 | Cook | Chicago | Ameritech Illinois | Landline |
312-323 | Cook | Chicago | American Messaging Services, Llc | Wireless |
312-324 | Cook | Chicago | Level 3 Communications, Llc - IL | Landline |
312-325 | Cook | Chicago | Ameritech Illinois | Landline |
312-326 | Cook | Chicago | Ameritech Illinois | Landline |
312-327 | Cook | Chicago | Xo Illinois, Inc. | Landline |
312-328 | Cook | Chicago | Ameritech Illinois | Landline |
312-329 | Cook | Chicago | Ameritech Illinois | Landline |
312-330 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-331 | Cook | Wheeling | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-332 | Cook | Chicago | Ameritech Illinois | Landline |
312-333 | Cook | Chicago | American Messaging Services, Llc | Wireless |
312-334 | Cook | Chicago | First Communications Llc - IL | Landline |
312-335 | Cook | Chicago | Ameritech Illinois | Landline |
312-336 | Cook | Chicago | Ameritech Illinois | Landline |
312-337 | Cook | Chicago | Ameritech Illinois | Landline |
312-338 | Cook | Chicago | Ameritech Illinois | Landline |
312-339 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-340 | Cook | Chicago | T-Mobile Usa, Inc. | Wireless |
312-341 | Cook | Chicago | Ameritech Illinois | Landline |
312-342 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-343 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-344 | Cook | Chicago | Ameritech Illinois | Landline |
312-345 | Cook | Chicago | Ameritech Illinois | Landline |
312-346 | Cook | Chicago | Ameritech Illinois | Landline |
312-347 | Cook | Chicago | Ameritech Illinois | Landline |
312-348 | Cook | Chicago | Neutral Tandem-Illinois, 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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