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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Dutton, ON

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
519-762 A DTTNON22RS0  8051 BELL ONTARIO 888 805119    
548-532 A STTMON080MD  464D FIBERNETICS CORPORATION 888 805119    

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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