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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
510-993 A Oakland: Berkeley DA CA   6529 T-MOBILE USA, INC. 722      
510-993 0 Oakland: Berkeley DA CA   981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-08-22   
510-993 1 Oakland: Berkeley DA CA   222H LOCAL ACCESS SERVICES LLC - CA 722   2016-09-14   
510-993 2 Oakland: Berkeley DA CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2017-05-07   
510-993 3 Oakland: Berkeley DA CA   649C ONVOY, LLC - CA 722   2017-06-17   
510-993 4 Oakland: Berkeley DA CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2017-08-10   
510-993 5 Oakland: Berkeley DA CA   6529 T-MOBILE USA, INC. 722   2016-08-25   
510-993 6 Oakland: Berkeley DA CA   6529 T-MOBILE USA, INC. 722   2016-08-25   
510-993 7 Oakland: Berkeley DA CA   6529 T-MOBILE USA, INC. 722   2016-08-25   
510-993 8 Oakland: Berkeley DA CA   6529 T-MOBILE USA, INC. 722   2016-08-11   
510-993 9 Oakland: Berkeley DA CA   6529 T-MOBILE USA, INC. 722   2016-08-11   

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.