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| npa-nxx | State | Company | OCN | Rate Center | CLLI | Assign Date | Misc |
| 956-299 | TX | STPCS JOINT VENTURE, LLC | 4290 | PORTISABEL | HRLNTXFPX1X | 03/25/2002 | Prefix Type: PCS Switch Name: HARLINGEN Switch Type: N/A LATA: N/A Tandem: N/A Detailed Switch Info |
| 956-426 | TX | ONVOY, LLC - TX (Sinch) | 903C | PORTISABEL | HRLNTXHGPMD | 04/19/2017 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A Detailed Switch Info |
| 956-433 | TX | STPCS JOINT VENTURE, LLC | 4290 | PORTISABEL | HRLNTXKX8MD | 12/03/2002 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A Detailed Switch Info |
| 956-524 | TX | METROPCS, INC. (T-Mobile US, Inc) | 5562 | PORTISABEL | HRLNTXKX7MD | 05/08/2007 | Prefix Type: PCS Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A Detailed Switch Info |
| 956-697 | TX | ONVOY, LLC - TX (Sinch) | 903C | PORTISABEL | HRLNTXHGX1X | 01/22/2021 | Prefix Type: CLEC Switch Name: N/A Switch Type: N/A LATA: N/A Tandem: N/A Detailed Switch Info |
| 956-761 | TX | SOUTHWESTERN BELL | 9533 | PORTISABEL | PTISTXSPRS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: South Padre Switch Type: Northern Telecom DMS100 Remote Line Module LATA: N/A Tandem: HRLNTXHG03T Detailed Switch Info |
| 956-772 | TX | SOUTHWESTERN BELL | 9533 | PORTISABEL | PTISTXSPRS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: South Padre Switch Type: Northern Telecom DMS100 Remote Line Module LATA: N/A Tandem: HRLNTXHG03T Detailed Switch Info |
| 956-943 | TX | SOUTHWESTERN BELL | 9533 | PORTISABEL | PTISTXPIRS0 | 00/00/0000 | Prefix Type: RBOC Switch Name: Port Isabel Switch Type: Northern Telecom DMS100 Remote Line Module LATA: N/A Tandem: HRLNTXHG03T Detailed Switch Info |
