You are reviewing the Area Code (NPA/NXX) report for 312-231. Did you mean to search the SMS short code 312231?
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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 | 312231 |
| Basic Format | 312-231 |
| NPA (Area Code) | 312 |
| NXX | 231 |
| NPA-NXX-X | OCN | Company | Rate Center | Use Type | City | State |
|---|---|---|---|---|---|---|
| 312-231-XXXX | 6534 | NEW CINGULAR WIRELESS PCS, LLC - IL | ROSELLE | AS | ROSELLE | IL |
Reports
Anonymous User from Chicago, Illinois
April 17, 2026 at 8:11 AM
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September 17, 2025 at 6:44 PM
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August 8, 2024 at 1:45 PM
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