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: 510 [Rate centres in NPA 510] [Dial plan for NPA 510]

NXX: 328

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
510-328 A Oakland: Fruitvale DA CA OKLDCA61DMD  6664 SPRINT SPECTRUM L.P. 722      
510-328 0 Oakland: Fruitvale DA CA   6529 T-MOBILE USA, INC. 722   2013-07-08   
510-328 1 Oakland: Fruitvale DA CA   516C AT&T CORP. 722   2013-09-03   
510-328 2 Oakland: Fruitvale DA CA   6664 SPRINT SPECTRUM L.P. 722   2013-04-19   
510-328 3 Oakland: Fruitvale DA CA   981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-03-23   
510-328 4 Oakland: Fruitvale DA CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2013-12-28   
510-328 5 Oakland: Fruitvale DA CA   6529 T-MOBILE USA, INC. 722   2014-09-16   
510-328 6 Oakland: Fruitvale DA CA   649C ONVOY, LLC - CA 722   2013-12-21   
510-328 7 Oakland: Fruitvale DA CA   649C ONVOY, LLC - CA 722   2013-12-21   
510-328 8 Oakland: Fruitvale DA CA   6664 SPRINT SPECTRUM L.P. 722   2013-03-30   
510-328 9 Oakland: Fruitvale DA CA   6664 SPRINT SPECTRUM L.P. 722   2013-03-30   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.