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| Raw Number | 231431 |
| Basic Format | 231-431 |
| NPA (Area Code) | 231 |
| NXX | 431 |
| NPA-NXX-X | OCN | Company | Rate Center | Use Type | Assign Date | City | State | Region | Block Effective Date | Block Available Date |
|---|---|---|---|---|---|---|---|---|---|---|
| 231-431-0XXX | 991E | BANDWIDTH.COM CLEC, LLC - MI | CLAM RIVER | AS | 07/27/2021 | CLAM RIVER | MI | MW | 08/23/2021 | |
| 231-431-1XXX | 543C | ONVOY, LLCV - MI | CLAM RIVER | AS | 07/27/2023 | CLAM RIVER | MI | MW | 08/26/2023 | |
| 231-431-2XXX | 543C | ONVOY, LLCV - MI | CLAM RIVER | AV | CLAM RIVER | MI | MW | 12/10/2024 | ||
| 231-431-3XXX | 543C | ONVOY, LLCV - MI | CLAM RIVER | AS | 06/11/2021 | CLAM RIVER | MI | MW | 07/24/2021 | |
| 231-431-4XXX | 543C | ONVOY, LLCV - MI | CLAM RIVER | AS | 02/02/2022 | CLAM RIVER | MI | MW | 03/04/2022 | |
| 231-431-5XXX | 543C | ONVOY, LLCV - MI | CLAM RIVER | AS | 08/11/2021 | CLAM RIVER | MI | MW | 09/10/2021 | |
| 231-431-6XXX | 543C | ONVOY, LLCV - MI | CLAM RIVER | AV | CLAM RIVER | MI | MW | 12/10/2024 | ||
| 231-431-7XXX | 145J | TERRA NOVA TELECOM INC. | CLAM RIVER | AS | 06/18/2025 | CLAM RIVER | MI | MW | 07/12/2025 | |
| 231-431-8XXX | 543C | ONVOY, LLCV - MI | CLAM RIVER | AV | CLAM RIVER | MI | MW | 12/10/2024 | ||
| 231-431-9XXX | 543C | ONVOY, LLCV - MI | CLAM RIVER | AV | CLAM RIVER | MI | MW | 12/10/2024 | ||
| 231-431-XXXX | 543C | ONVOY, LLCV - MI | CLAM RIVER | AS | 05/19/2021 | CLAM RIVER | MI |
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