Local Calling Guide
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Switch: ALTNNHXA
| Switch (link to prefixes) | Switch name | Company |
|---|---|---|
| ALTNNHXA0MD | ||
| ALTNNHXAPS0 | ALTON | |
| ALTNNHXARP0 | 0049 UNION TEL. CO. |
Last updated: Thu, 29 Jan 2026 14:35:03 UTC
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