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| Raw Number | 331261 |
| Basic Format | 331-261 |
| NPA (Area Code) | 331 |
| NXX | 261 |
| NPA-NXX-X | OCN | Company | Rate Center | Use Type | Assign Date | State | Region | Block Effective Date | Block Available Date |
|---|---|---|---|---|---|---|---|---|---|
| 331-261-0XXX | 495J | STRATUS NETWORKS | LEMONT | AS | 08/30/2020 | IL | MW | 09/26/2020 | |
| 331-261-1XXX | 515J | IP HORIZON LLC | LEMONT | AS | 05/21/2021 | IL | MW | 06/14/2021 | |
| 331-261-2XXX | 6529 | T-MOBILE USA, INC. | LEMONT | AV | IL | MW | 08/14/2024 | ||
| 331-261-3XXX | 6529 | T-MOBILE USA, INC. | LEMONT | AF | IL | MW | 04/21/2026 | ||
| 331-261-4XXX | 224C | ONVOY, LLC | LEMONT | AS | 06/08/2021 | IL | MW | 07/04/2021 | |
| 331-261-5XXX | 224C | ONVOY, LLC | LEMONT | AS | 06/08/2021 | IL | MW | 07/04/2021 | |
| 331-261-6XXX | 224C | ONVOY, LLC | LEMONT | AS | 06/08/2021 | IL | MW | 07/04/2021 | |
| 331-261-7XXX | 6529 | T-MOBILE USA, INC. | LEMONT | AF | IL | MW | 05/05/2026 | ||
| 331-261-8XXX | 6529 | T-MOBILE USA, INC. | LEMONT | AF | IL | MW | 04/21/2026 | ||
| 331-261-9XXX | 6529 | T-MOBILE USA, INC. | LEMONT | AS | 06/21/2019 | IL | MW | 08/19/2019 | |
| 331-261-XXXX | 6529 | T-MOBILE USA, INC. | LEMONT | AS | 06/20/2019 | IL |
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