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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Cardiff, ON

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
343-409 A BLVLON24OMD  548H TEKSAVVY SOLUTIONS INC. - ON 888 805126    
343-561 A BLVLON248MD  4727 ISP TELECOM, INC. 888 805126    
343-715 A BLVLON24MMD  995D NEXICOM TELECOMMUNICATIONS INC. - ON 888 805126    
343-858 A BLVLON24BMD  464D FIBERNETICS CORPORATION 888 805126    
613-339 A CRDFON01RS0  8051 BELL ONTARIO 888 805126    

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.