Local Calling Guide

Switch search

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

Switch: SPFDILSL

Switch (link to prefixes) Switch name Company
SPFDILSLDS0 SPRINGFIELD LAKE DS0  9329 ILLINOIS BELL TEL CO 
SPFDILSLRS0 SPRINGFIELD LAKE RS0  9329 ILLINOIS BELL TEL CO 

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.