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: 508

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
408-508 A Campbell CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
408-508 0 Campbell CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
408-508 1 Campbell CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
408-508 2 Campbell CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
408-508 3 Campbell CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
408-508 4 Campbell CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
408-508 5 Campbell CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
408-508 6 Campbell CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
408-508 7 Campbell CA OKLDCAMP1MD  4733 PAETEC COMMUNICATIONS, INC. - CA 722      
408-508 8 Campbell CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
408-508 9 Campbell CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.