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.


NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
519-233 A Clinton Independent ON CLTNONXTRS0  888 824001    
519-263 A Hensall Independent ON HNSLONXTRS0  888 824001    
519-522 A Seaforth Independent ON SFTHONXBRS0  888 824001    
519-565 A Bayfield ON BYFDONXTDS0  888 824001    

Last updated: Sun, 17 Oct 2021 19:41:42 UTC

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