You are reviewing the Area Code (NPA/NXX) report for 312-904. Did you mean to search the SMS short code 312904?
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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 | 312904 |
| Basic Format | 312-904 |
| NPA (Area Code) | 312 |
| NXX | 904 |
| NPA-NXX-X | OCN | Company | Rate Center | Use Type | State |
|---|---|---|---|---|---|
| 312-904-XXXX | 9329 | ILLINOIS BELL TEL CO | CHICGOZN01 | AS | IL |
Reports
Anonymous User from Matteson, Illinois
January 11, 2026 at 12:04 PM
Anonymous User from Libertyville, Illinois
March 26, 2025 at 4:10 PM
Anonymous User from Rockledge, Florida
March 18, 2025 at 3:44 PM
Anonymous User from , IL
February 8, 2025 at 11:13 AM
Anonymous User from Burr Ridge, Illinois
December 4, 2024 at 3:13 PM
Anonymous User from , IL
September 30, 2024 at 11:03 AM
Anonymous User from Chicago, Illinois
May 30, 2024 at 5:35 PM
Anonymous User from , IL
November 25, 2023 at 3:05 PM
Anonymous User from , IL
November 25, 2023 at 12:15 PM
Anonymous User from Des Plaines, Illinois
May 25, 2023 at 6:07 PM