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| npa-nxx | State | Company | OCN | Rate Center | CLLI | Assign Date | Misc |
| 979-298 | TX | TEXAS COMMUNICATIONS, INC. | 6820 | NORTHRUP | SANGTXCCCM0 | 06/03/2004 | Prefix Type: WIRELESS Switch Name: N/A Switch Type: 5ESS LATA: N/A Tandem: N/A Detailed Switch Info |
| 979-348 | TX | FRACTEL, LLC | 965H | NORTHRUP | BRYNTXXAXJX | 03/02/2021 | Prefix Type: IPES Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A Detailed Switch Info |
| 979-366 | TX | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS (Frontier Communications) | 4344 | NORTHRUP | NRUPTXXADS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: NORTHRUP Switch Type: NTDMSSSO LATA: N/A Tandem: BRYNTXXA02T Detailed Switch Info |