Local Calling Guide

Switch search

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

Switch: WASHDCDT

Switch (link to prefixes) Switch name Company
WASHDCDTDS1 WASHINGTON  7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 
WASHDCDTDS2 WASHINGTON  7421 AT&T - LOCAL 

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.