Local Calling Guide
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Switch: HSTNTX01
| Switch (link to prefixes) | Switch name | Company |
|---|---|---|
| HSTNTX01CA4 | HOUSTON | |
| HSTNTX01CA6 | HOUSTON | |
| HSTNTX01DS2 | HOUSTON | 7421 AT&T - LOCAL |
| HSTNTX01DS3 | HOUSTON | |
| HSTNTX01DS4 | HOUSTON | 7421 AT&T - LOCAL |
| HSTNTX01DS5 | HOUSTON | 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX |
| HSTNTX01G04 | HOUSTON | 6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
| HSTNTX01GT5 | 6534 NEW CINGULAR WIRELESS PCS, LLC - IL | |
| HSTNTX01GT7 | ||
| HSTNTX01MMD | 7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX | |
| HSTNTX01MMD | 7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX | |
| HSTNTX01OMD | ||
| HSTNTX01X7X | 516C AT&T CORP. |
Last updated: Thu, 16 Oct 2025 03:04:18 UTC
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