You are reviewing the Area Code (NPA/NXX) report for 312-817. Did you mean to search the SMS short code 312817?
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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 | 312817 |
| Basic Format | 312-817 |
| NPA (Area Code) | 312 |
| NXX | 817 |
| NPA-NXX-X | OCN | Company | Rate Center | Use Type | City | State |
|---|---|---|---|---|---|---|
| 312-817-XXXX | 9329 | ILLINOIS BELL TEL CO | CHICGOZN01 | AS | CHICAGO ZONE 01 | IL |
Reports
Anonymous User from Palm Springs, California
February 11, 2026 at 1:58 PM
Anonymous User from Libertyville, Illinois
May 17, 2025 at 12:04 PM
Anonymous User from Chicago, Illinois
February 21, 2025 at 4:29 PM
Anonymous User from , IL
July 6, 2023 at 4:34 PM
Anonymous User from Chicago, Illinois
March 30, 2023 at 4:06 PM
Anonymous User from Chicago, Illinois
March 29, 2023 at 5:18 PM
Anonymous User from Chicago, Illinois
June 30, 2022 at 1:34 PM