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: 520

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
408-520 A San Jose: North DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
408-520 0 San Jose: North DA CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-02-26   
408-520 1 San Jose: North DA CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-02-26   
408-520 2 San Jose: North DA CA SNFCCAMMDSA  4129 O1 COMMUNICATIONS, INC. - CA 722   2010-03-15   
408-520 3 San Jose: North DA CA FRMTCAEDDS2  7262 XO CALIFORNIA, INC. 722   2010-05-17   
408-520 4 San Jose: North DA CA FRMTCAEDDS2  7262 XO CALIFORNIA, INC. 722   2010-05-17   
408-520 5 San Jose: North DA CA SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2010-05-17   
408-520 6 San Jose: North DA CA OKLECAZVGT0  5562 METRO PCS, INC. 722   2010-05-29   
408-520 7 San Jose: North DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2010-01-23   
408-520 8 San Jose: North DA CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2010-06-11   
408-520 9 San Jose: North DA CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-07-09   

Last updated: Sun, 07 Feb 2021 01:52:50 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.