You are reviewing the Area Code (NPA/NXX) report for 231-666. Did you mean to search the SMS short code 231666?
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| Raw Number | 231666 |
| Basic Format | 231-666 |
| NPA (Area Code) | 231 |
| NXX | 666 |
| NPA-NXX-X | OCN | Company | Rate Center | Use Type | Assign Date | City | State | Region | Block Effective Date |
|---|---|---|---|---|---|---|---|---|---|
| 231-666-0XXX | 543C | ONVOY, LLCV - MI | MUSKEGON | AS | 11/21/2017 | MUSKEGON | MI | MW | 12/21/2017 |
| 231-666-1XXX | 6003 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | MUSKEGON | AS | 08/13/2018 | MUSKEGON | MI | MW | 10/15/2018 |
| 231-666-2XXX | 508J | CENTURYLINK COMMUNICATIONS, LLC | MUSKEGON | AS | 04/15/2020 | MUSKEGON | MI | MW | 05/09/2020 |
| 231-666-3XXX | 508J | CENTURYLINK COMMUNICATIONS, LLC | MUSKEGON | AS | 04/15/2020 | MUSKEGON | MI | MW | 05/09/2020 |
| 231-666-4XXX | 6003 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI | MUSKEGON | AS | 08/13/2018 | MUSKEGON | MI | MW | 09/09/2018 |
| 231-666-5XXX | 508J | CENTURYLINK COMMUNICATIONS, LLC | MUSKEGON | AS | 04/15/2020 | MUSKEGON | MI | MW | 05/09/2020 |
| 231-666-6XXX | 543C | ONVOY, LLCV - MI | MUSKEGON | AS | 10/10/2017 | MUSKEGON | MI | MW | 12/07/2017 |
| 231-666-7XXX | 933G | PEERLESS NETWORK OF MICHIGAN, LLC - MI | MUSKEGON | AS | 08/20/2018 | MUSKEGON | MI | MW | 09/17/2018 |
| 231-666-8XXX | 508J | CENTURYLINK COMMUNICATIONS, LLC | MUSKEGON | AS | 04/15/2020 | MUSKEGON | MI | MW | 05/09/2020 |
| 231-666-9XXX | 508J | CENTURYLINK COMMUNICATIONS, LLC | MUSKEGON | AS | 04/15/2020 | MUSKEGON | MI | MW | 05/09/2020 |
| 231-666-XXXX | 543C | ONVOY, LLCV - MI | MUSKEGON | AS | 10/09/2017 | MUSKEGON | MI |
Reports
Anonymous User from East Lansing, Michigan
April 15, 2026 at 1:32 PM
Anonymous User from Kalkaska, Michigan
December 6, 2025 at 10:50 AM
Anonymous User from Tulsa, Oklahoma
August 22, 2025 at 5:44 PM
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March 24, 2025 at 7:53 PM
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September 3, 2023 at 11:11 AM
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February 1, 2023 at 8:05 PM
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Anonymous User from Cadillac, MI
June 23, 2022 at 2:22 PM