Local Calling Guide

Switch search

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

Switch: CSTNILXD

Switch (link to prefixes) Switch name Company
CSTNILXDRS0 CASTLETON  1015 FRONTIER NORTH, INC. - IL 

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.