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| npa-nxx | State | Company | OCN | Rate Center | CLLI | Assign Date | Misc |
| 936-277 | TX | ONVOY, LLC - TX (Sinch) | 903C | RAYWOOD | HSTNTXYADS5 | 03/18/2016 | Prefix Type: CLEC Switch Name: HOUSTON Switch Type: N/A LATA: N/A Tandem: N/A Detailed Switch Info |
| 936-313 | TX | ONVOY, LLC - TX (Sinch) | 903C | RAYWOOD | HSTNTXYADS5 | 07/06/2021 | Prefix Type: CLEC Switch Name: HOUSTON Switch Type: N/A LATA: N/A Tandem: N/A Detailed Switch Info |
| 936-587 | TX | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (Frontier Communications) | 2154 | RAYWOOD | RYWDTXXARS1 | 00/00/0000 | Prefix Type: RBOC Switch Name: RAYWOOD Switch Type: NTDMSRSC LATA: N/A Tandem: HSTNTXMO08T Detailed Switch Info |