Local Calling Guide

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Switch: TGRDORAO

Switch (link to prefixes) Switch name Company
TGRDORAODS0 PORTLAND  7531 TELEPORT COMMUNICATIONS AMERICA, LLC - OR 
TGRDORAODS0 PORTLAND  7146 TELEPORT COMMUNICATIONS AMERICA, LLC - WA 

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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