Local Calling Guide

Switch search

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

Switch: PTLDARMA

Switch (link to prefixes) Switch name Company
PTLDARMARS1 PORTLAND  9533 SOUTHWESTERN BELL 

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.