Local Calling Guide

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Switch: DLLSTXAD

Switch (link to prefixes) Switch name Company
DLLSTXADDS0 Addison  9533 SOUTHWESTERN BELL 
DLLSTXADDS1 Addison  9533 SOUTHWESTERN BELL 
DLLSTXADRS3 ADDISON  9533 SOUTHWESTERN BELL 

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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