Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Castleton, ON

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
365-875 A CSTNON730MD  2782 TELUS INTEGRATED COMMUNICATIONS 888 805134    
905-344 A CSTNON73RS0  8051 BELL ONTARIO 888 805134    

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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