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.

Standard, AB

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
403-644 A STDDAB01RS3  8084 TELUS COMMUNICATIONS, INC. 888 808401    
587-562 A CLGRAB21TMD  081E DISTRIBUTEL COMMUNICATIONS LIMITED 888 808401    
587-661 A CLGRAB01EMD  160G COMWAVE NETWORKS INC. - ON 888 808401    
587-696 A CLGRAB01HMD  812H IXICA COMMUNICATIONS, INC. 888 808401    

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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