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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Vanguard, SK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
306-582 A VNGRSK01RS1  8091 SASKTEL 888 809107    
639-545 A VNGRSK02CM1  9868 SASKTEL 888 809107    

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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