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 |
---|---|---|---|---|
312-201 | Cook | Chicago | Ameritech Illinois | Landline |
312-202 | Cook | Chicago | Ameritech Illinois | Landline |
312-203 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-204 | Cook | Chicago | Ameritech Illinois | Landline |
312-205 | Cook | Chicago | Allegiance Telecom, Inc. - IL | Landline |
312-206 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-207 | Cook | Chicago | Ameritech Illinois | Landline |
312-208 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-209 | Adams | Northbrook | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-212 | Cook | Chicago | Ameritech Illinois | Landline |
312-213 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-214 | Cook | Chicago | Ameritech Illinois | Landline |
312-215 | Cook | Wheeling | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-216 | Cook | Chicago | First Communications Llc - IL | Landline |
312-217 | Cook | Chicago | Sprint Spectrum L.p. | Wireless |
312-218 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-219 | Cook | Chicago | Bandwidth.com Clec, Llc - IL | Wireless |
312-220 | Cook | Chicago | Ameritech Illinois | Landline |
312-221 | Cook | Chicago | Sprint Spectrum L.p. | Wireless |
312-222 | Cook | Chicago | Ameritech Illinois | Landline |
312-223 | Cook | Chicago | Ameritech Illinois | Landline |
312-224 | Cook | Chicago | Broadwing Communications, Llc - IL | Landline |
312-225 | Cook | Chicago | Ameritech Illinois | Landline |
312-226 | Cook | Chicago | Ameritech Illinois | Landline |
312-227 | Cook | Chicago | Ameritech Illinois | Landline |
312-228 | Cook | Chicago | Ameritech Illinois | Landline |
312-229 | Cook | Chicago | Ameritech Illinois | Landline |
312-230 | Cook | Chicago | Ameritech Illinois | Landline |
312-231 | DuPage | Roselle | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-232 | Cook | Chicago | American Messaging Services, Llc | Wireless |
312-233 | Cook | Chicago | Ameritech Illinois | Landline |
312-234 | Cook | Chicago | Ameritech Illinois | Landline |
312-235 | Cook | Chicago | Ameritech Illinois | Landline |
312-236 | Cook | Chicago | Ameritech Illinois | Landline |
312-237 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-238 | Cook | Chicago | Broadwing Communications, Llc - IL | Landline |
312-239 | Cook | Chicago | At&t Local | Landline |
312-240 | Cook | Chicago | Ameritech Illinois | Landline |
312-241 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-242 | Cook | Chicago | Teleport Communications America, Llc - IL | Landline |
312-243 | Cook | Chicago | Ameritech Illinois | Landline |
312-244 | Cook | Chicago | Ameritech Illinois | Landline |
312-245 | Cook | Chicago | Ameritech Illinois | Landline |
312-246 | Cook | Wheeling | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-247 | Cook | Chicago | First Communications Llc - IL | Landline |
312-249 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-250 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-251 | Cook | Chicago | Ameritech Illinois | Landline |
312-252 | Cook | Chicago | Allegiance Telecom, Inc. - IL | Landline |
312-253 | Cook | Chicago | Allegiance Telecom, Inc. - IL | Landline |
312-254 | Cook | Chicago | Allegiance Telecom, Inc. - IL | Landline |
312-255 | Cook | Chicago | Ameritech Illinois | Landline |
312-256 | Cook | Chicago | Allegiance Telecom, Inc. - IL | Landline |
312-257 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-258 | Cook | Chicago | Ameritech Illinois | Landline |
312-259 | Cook | Chicago | New Cingular Wireless Pcs, Llc - IL | Wireless |
312-260 | Cook | Chicago | Mcimetro Access Transmission Services Llc | Landline |
312-261 | Cook | Chicago | Broadwing Communications, Llc - IL | Landline |
312-262 | Cook | Chicago | Allegiance Telecom, Inc. - IL | Landline |
312-263 | Cook | Chicago | Ameritech Illinois | Landline |
312-264 | Cook | Chicago | Broadwing Communications, Llc - IL | Landline |
312-265 | Cook | Chicago | Access One, Inc. - IL | Landline |
312-266 | Cook | Chicago | Ameritech Illinois | Landline |
312-267 | Cook | Chicago | Ameritech Illinois | Landline |
312-268 | Cook | Chicago | Broadwing Communications, Llc - IL | Landline |
312-269 | Cook | Chicago | Ameritech Illinois | Landline |
312-271 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-272 | Cook | Chicago | Usa Mobility Wireless, Inc. | Wireless |
312-273 | Cook | Chicago | Cellco Partnership Dba Verizon Wireless - IL | Wireless |
312-274 | 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 |
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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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