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: SNJSCA02DS3

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
408-755 4 San Jose: West DA CA 7421 AT&T - LOCAL 722   2011-08-01   
408-916 A San Jose: West DA CA 7421 AT&T - LOCAL 722      
408-916 0 San Jose: West DA CA 7421 AT&T - LOCAL 722      
408-916 2 San Jose: West DA CA 7421 AT&T - LOCAL 722      
408-916 9 San Jose: West DA CA 7421 AT&T - LOCAL 722      
669-800 3 San Jose: West DA CA 7421 AT&T - LOCAL 722   2013-02-18   

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

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