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| Raw Number | 815542 |
| Basic Format | 815-542 |
| NPA (Area Code) | 815 |
| NXX | 542 |
| NPA-NXX-X | OCN | Company | Rate Center | Use Type | Assign Date | City | State | Region | Block Effective Date |
|---|---|---|---|---|---|---|---|---|---|
| 815-542-0XXX | 1183 | CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL | THOMAS | RT | THOMAS | IL | MW | ||
| 815-542-1XXX | 1183 | CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL | THOMAS | RT | THOMAS | IL | MW | ||
| 815-542-2XXX | 224C | ONVOY, LLC | THOMAS | AS | 08/09/2018 | THOMAS | IL | MW | 10/01/2018 |
| 815-542-3XXX | 224C | ONVOY, LLC | THOMAS | AS | 08/09/2019 | THOMAS | IL | MW | 09/07/2019 |
| 815-542-4XXX | 073H | TELNYX LLC | THOMAS | AS | 06/26/2020 | THOMAS | IL | MW | 07/20/2020 |
| 815-542-5XXX | 508J | CENTURYLINK COMMUNICATIONS, LLC | THOMAS | AS | 07/16/2014 | THOMAS | IL | MW | 08/15/2014 |
| 815-542-6XXX | 1183 | CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL | THOMAS | RT | THOMAS | IL | MW | ||
| 815-542-7XXX | 1183 | CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL | THOMAS | RT | THOMAS | IL | MW | ||
| 815-542-8XXX | 1183 | CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL | THOMAS | RT | THOMAS | IL | MW | ||
| 815-542-9XXX | 1183 | CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL | THOMAS | RT | THOMAS | IL | MW | ||
| 815-542-XXXX | 1183 | CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL | THOMAS | AS | THOMAS | IL |
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