Local Calling Guide

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Search by CLLI code
  • Enter full or partial CLLI code to see all matching switches.

Switch: CLMBOH27

Switch (link to prefixes) Switch name Company
CLMBOH27DS0 COLUMBUS 27 DS0  9321 OHIO BELL TEL CO 
CLMBOH27RS1 COLUMBUS 27 RS1   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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