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.

Switch: BURLON02EMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
289-427 A Burlington ON 4727 ISP TELECOM, INC. 888 805125    
289-428 A Georgetown ON 4727 ISP TELECOM, INC. 888 805125    
289-429 A Milton ON 4727 ISP TELECOM, INC. 888 805125    
289-430 A Oakville ON 4727 ISP TELECOM, INC. 888 805125    
289-431 A Waterdown ON 4727 ISP TELECOM, INC. 888 805125    
365-277 A Campbellville ON 4727 ISP TELECOM, INC. 888 805125    
365-278 A Freelton ON 4727 ISP TELECOM, INC. 888 805125    

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

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