You are reviewing the Area Code (NPA/NXX) report for 312-558. Did you mean to search the SMS short code 312558?
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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 | 312558 |
| Basic Format | 312-558 |
| NPA (Area Code) | 312 |
| NXX | 558 |
| NPA-NXX-X | OCN | Company | Rate Center | Use Type | City | State |
|---|---|---|---|---|---|---|
| 312-558-XXXX | 9329 | ILLINOIS BELL TEL CO | CHICGOZN01 | AS | CHICAGO ZONE 01 | IL |
| Phone | Name | Address |
|---|---|---|
| 312-558-1543 | Property Tax Relief Corporation | |
| 312-558-1020 | La Quinta Inn & Suites by Wyndham Chicago Downtown | 1 South Franklin Street Chicago 60606 US |
Reports
Anonymous User from Algonquin, Illinois
April 15, 2026 at 7:36 PM
Anonymous User from Chicago, Illinois
April 8, 2026 at 10:07 AM
Anonymous User from Chicago, Illinois
February 23, 2026 at 2:23 PM
Anonymous User from , CA
October 18, 2023 at 4:20 PM
Anonymous User from , IL
March 28, 2023 at 4:08 PM
Anonymous User from Chicago, Illinois
February 19, 2023 at 2:17 PM
Anonymous User from Vermilion, Ohio
October 6, 2022 at 1:29 PM
Anonymous User from Belvidere, IL
January 18, 2021 at 8:14 PM