Local Calling Guide

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NPA: 548 [Rate centres in NPA 548] [Dial plan for NPA 548]

NXX: 859

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
548-859 A Strathroy ON LONDON14IMD  4727 ISP TELECOM, INC. 888 805131    

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

Sponsored by: ISP Telecom

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