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
510-746 A Oakland: Trinidad DA CA SNJSCAYBDS0  7453 U.S. TELEPACIFIC CORP. - CA 722      
510-746 0 Oakland: Trinidad DA CA   7453 U.S. TELEPACIFIC CORP. - CA 722      
510-746 1 Oakland: Trinidad DA CA   7453 U.S. TELEPACIFIC CORP. - CA 722      
510-746 2 Oakland: Trinidad DA CA   7453 U.S. TELEPACIFIC CORP. - CA 722      
510-746 3 Oakland: Trinidad DA CA   7453 U.S. TELEPACIFIC CORP. - CA 722      
510-746 4 Oakland: Trinidad DA CA   7453 U.S. TELEPACIFIC CORP. - CA 722      
510-746 5 Oakland: Trinidad DA CA   7453 U.S. TELEPACIFIC CORP. - CA 722      
510-746 6 Oakland: Trinidad DA CA   6664 SPRINT SPECTRUM L.P. 722   2011-02-28   
510-746 7 Oakland: Trinidad DA CA   7453 U.S. TELEPACIFIC CORP. - CA 722      
510-746 8 Oakland: Trinidad DA CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-10-06   
510-746 9 Oakland: Trinidad DA CA   7453 U.S. TELEPACIFIC CORP. - CA 722      

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.