Local Calling Guide

Switch search

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

Switch: SMFRCTPU

Switch (link to prefixes) Switch name Company
SMFRCTPU4MD   4800 LEVEL 3 COMMUNICATIONS, LLC - CT 

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.