Local Calling Guide

Switch search

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

Switch: HRTWILHT

Switch (link to prefixes) Switch name Company
HRTWILHTRS0 HARRISTOWN  9329 ILLINOIS BELL TEL CO 

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.