Local Calling Guide

Switch search

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

Switch: OLTRARMA

Switch (link to prefixes) Switch name Company
OLTRARMARL0 OIL TROUGH  9533 SOUTHWESTERN BELL 

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.