Local Calling Guide

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Switch: SPFDILMB

Switch (link to prefixes) Switch name Company
SPFDILMB0MD   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 
SPFDILMBWMD   073H TELNYX LLC 

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

Sponsored by: Callcentric - VoIP Internet phone service

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