You are reviewing the Area Code (NPA/NXX) report for 312-409. Did you mean to search the SMS short code 312409?
Paste raw digits, a formatted phone number, an area code, an NPA-NXX block, or a short code. US and Canada phone lookups route automatically, and international iMessage checks are available separately.
The area code you entered, 312, overlaps with the DSN network for the Continental United States and Puerto Rico under Northern Command (NORTHCOM), though it could also be part of standard civilian phone numbers.
| Raw Number | 312409 |
| Basic Format | 312-409 |
| NPA (Area Code) | 312 |
| NXX | 409 |
| NPA-NXX-X | OCN | Company | Rate Center | Use Type | Assign Date | City | State | Region | Block Effective Date |
|---|---|---|---|---|---|---|---|---|---|
| 312-409-0XXX | 6529 | T-MOBILE USA, INC. | CHICGOZN01 | AS | 01/06/2016 | CHICAGO ZONE 01 | IL | MW | 02/05/2016 |
| 312-409-1XXX | 6529 | T-MOBILE USA, INC. | CHICGOZN01 | AS | 01/06/2016 | CHICAGO ZONE 01 | IL | MW | 02/05/2016 |
| 312-409-2XXX | 6333 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | CHICGOZN01 | AS | 08/26/2025 | CHICAGO ZONE 01 | IL | MW | 09/25/2025 |
| 312-409-3XXX | 6529 | T-MOBILE USA, INC. | CHICGOZN01 | AS | 01/06/2016 | CHICAGO ZONE 01 | IL | MW | 02/05/2016 |
| 312-409-4XXX | 5562 | METROPCS, INC. | CHICGOZN01 | AS | 01/11/2016 | CHICAGO ZONE 01 | IL | MW | 02/04/2016 |
| 312-409-5XXX | 6529 | T-MOBILE USA, INC. | CHICGOZN01 | AS | 01/06/2016 | CHICAGO ZONE 01 | IL | MW | 02/05/2016 |
| 312-409-6XXX | 9329 | ILLINOIS BELL TEL CO | CHICGOZN01 | RT | CHICAGO ZONE 01 | IL | MW | ||
| 312-409-7XXX | 5562 | METROPCS, INC. | CHICGOZN01 | AS | 01/11/2016 | CHICAGO ZONE 01 | IL | MW | 02/04/2016 |
| 312-409-8XXX | 5562 | METROPCS, INC. | CHICGOZN01 | AS | 12/23/2015 | CHICAGO ZONE 01 | IL | MW | 01/16/2016 |
| 312-409-9XXX | 5562 | METROPCS, INC. | CHICGOZN01 | AS | 12/23/2015 | CHICAGO ZONE 01 | IL | MW | 01/16/2016 |
| 312-409-XXXX | 9329 | ILLINOIS BELL TEL CO | CHICGOZN01 | AS | CHICAGO ZONE 01 | IL |
| Phone | Name | Address |
|---|---|---|
| 312-409-9393 | 24-7 Locksmith Services |
Reports
Anonymous User from Chicago, Illinois
March 12, 2026 at 4:03 PM
Anonymous User from Westwego, Louisiana
November 26, 2025 at 5:04 PM
Anonymous User from Chicago, Illinois
July 31, 2025 at 6:15 PM
Anonymous User from Chicago, Illinois
March 14, 2024 at 3:04 PM
Anonymous User from Chicago, Illinois
February 8, 2024 at 1:37 PM
Anonymous User from , IL
June 3, 2023 at 12:53 PM
Anonymous User from Chicago, Illinois
March 17, 2023 at 10:58 AM
Anonymous User from Homeland, CA
March 9, 2023 at 9:18 PM