Local Calling Guide

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Search by CLLI code
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Switch: CLMBOH27

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

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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