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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 | 312791 |
| Basic Format | 312-791 |
| NPA (Area Code) | 312 |
| NXX | 791 |
| NPA-NXX-X | OCN | Company | Rate Center | Use Type | Assign Date | City | State | Region | Block Effective Date |
|---|---|---|---|---|---|---|---|---|---|
| 312-791-0XXX | 9329 | ILLINOIS BELL TEL CO | CHICGOZN01 | RT | CHICAGO ZONE 01 | IL | MW | ||
| 312-791-1XXX | 9329 | ILLINOIS BELL TEL CO | CHICGOZN01 | RT | CHICAGO ZONE 01 | IL | MW | ||
| 312-791-2XXX | 9329 | ILLINOIS BELL TEL CO | CHICGOZN01 | RT | CHICAGO ZONE 01 | IL | MW | ||
| 312-791-3XXX | 9329 | ILLINOIS BELL TEL CO | CHICGOZN01 | RT | CHICAGO ZONE 01 | IL | MW | ||
| 312-791-4XXX | 9329 | ILLINOIS BELL TEL CO | CHICGOZN01 | RT | CHICAGO ZONE 01 | IL | MW | ||
| 312-791-5XXX | 9329 | ILLINOIS BELL TEL CO | CHICGOZN01 | RT | CHICAGO ZONE 01 | IL | MW | ||
| 312-791-6XXX | 9329 | ILLINOIS BELL TEL CO | CHICGOZN01 | RT | CHICAGO ZONE 01 | IL | MW | ||
| 312-791-7XXX | 9329 | ILLINOIS BELL TEL CO | CHICGOZN01 | RT | CHICAGO ZONE 01 | IL | MW | ||
| 312-791-8XXX | 9329 | ILLINOIS BELL TEL CO | CHICGOZN01 | RT | CHICAGO ZONE 01 | IL | MW | ||
| 312-791-9XXX | 145J | TERRA NOVA TELECOM INC. | CHICGOZN01 | AS | 03/10/2025 | CHICAGO ZONE 01 | IL | MW | 04/09/2025 |
| 312-791-XXXX | 9329 | ILLINOIS BELL TEL CO | CHICGOZN01 | AS | CHICAGO ZONE 01 | IL |
| Phone | Name | Address |
|---|---|---|
| 312-791-0003 | Angela Ip and Associates, LLC | 219 West Cermak Road Chicago 60616 US |
| 312-791-0206 | 7-Eleven | 3201 South State Street Chicago 60616 US |
| 312-791-1618 | Kent Young Health Products | 2400 South Wentworth Avenue Chicago 60616 US |
| 312-791-1829 | A Tooth Company | 2165 South China Place Chicago 60616 US |
| 312-791-1882 | Sze Chuan Cuisine | 2414 South Wentworth Avenue Chicago 60616 US |
| 312-791-9111 | Park To Shop Supermarket | 2425 South Wallace Street Chicago 60616 US |
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