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: 408 [Rate centres in NPA 408] [Dial plan for NPA 408]

NXX: 426

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
408-426 A Campbell CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
408-426 0 Campbell CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
408-426 1 Campbell CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
408-426 2 Campbell CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2012-07-11   
408-426 3 Campbell CA SNJSCA02DS4  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2013-02-16   
408-426 4 Campbell CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2003-01-10   
408-426 5 Campbell CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2004-12-03   
408-426 6 Campbell CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
408-426 7 Campbell CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
408-426 8 Campbell CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2004-11-05   
408-426 9 Campbell CA OKLDCAEB0MD  073H TELNYX LLC 722   2022-05-12   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.