You are reviewing the Area Code (NPA/NXX) report for 312-864. Did you mean to search the SMS short code 312864?
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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 | 312864 |
| Basic Format | 312-864 |
| NPA (Area Code) | 312 |
| NXX | 864 |
| NPA-NXX-X | OCN | Company | Rate Center | Use Type | City | State |
|---|---|---|---|---|---|---|
| 312-864-XXXX | 9329 | ILLINOIS BELL TEL CO | CHICGOZN01 | AS | CHICAGO ZONE 01 | IL |
| Phone | Name | Address |
|---|---|---|
| 312-864-6000 | John H. Stroger, Jr. Hospital of Cook County | 1969 West Ogden Avenue Chicago 60612 US |
Reports
Anonymous User from Algonquin, Illinois
April 9, 2026 at 10:45 PM
Anonymous User from Chicago, Illinois
March 17, 2026 at 11:48 PM
Anonymous User from Libertyville, Illinois
December 7, 2025 at 11:33 AM
Anonymous User from Libertyville, Illinois
June 27, 2025 at 8:35 AM
Anonymous User from Libertyville, Illinois
May 14, 2025 at 10:39 AM
Anonymous User from Illinois, Illinois
January 14, 2025 at 10:46 AM
Anonymous User from , NY
December 31, 2024 at 2:00 PM
Anonymous User from Union City, GA
October 17, 2024 at 3:06 PM
Anonymous User from Johnstown, Pennsylvania
August 26, 2024 at 3:30 PM
Anonymous User from Chula Vista, California
November 30, 2022 at 6:58 PM
Anonymous User from Hillside, IL
September 14, 2021 at 9:10 PM
Anonymous User from Wheaton, IL
November 6, 2020 at 10:41 PM