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.

Caledon, ON

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
226-612 A OGVLON233MD  464D FIBERNETICS CORPORATION 888 805117    
382-582 A   464D FIBERNETICS CORPORATION 888 805117    
519-316 A CALDON280MD  743B ROGERS COMMUNICATIONS CANADA INC. 888 805117    
519-927 A CALDON28RS0  8051 BELL ONTARIO 888 805117    
548-431 A OGVLON233MD  464D FIBERNETICS CORPORATION 888 805117    
548-879 A OGVLON130MD  4727 ISP TELECOM, INC. 888 805117    

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.