Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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South Mountain, ON

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
343-259 A OTWAON23XKX  082E DISTRIBUTEL COMMUNICATIONS LIMITED - ON 888 805105    
343-345 A OTWAON23XOX  548H TEKSAVVY SOLUTIONS INC. - ON 888 805105    
343-539 A SOMTON190MD  2782 TELUS INTEGRATED COMMUNICATIONS 888 805105    
343-651 A OTWAON23X0X  464D FIBERNETICS CORPORATION 888 805105    
613-989 A SOMTON19RS0  8051 BELL ONTARIO 888 805105    

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

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