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: 924

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
510-924 A Oakland: Trinidad DA CA OKLDCAOL1MD  8690 GLOBAL CROSSING LOCAL SERVICES, INC. - CA 722      
510-924 0 Oakland: Trinidad DA CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
510-924 1 Oakland: Trinidad DA CA OKLDCAOL1MD  8690 GLOBAL CROSSING LOCAL SERVICES, INC. - CA 722      
510-924 3 Oakland: Trinidad DA CA OKLDCAMP1MD  4733 PAETEC COMMUNICATIONS, INC. - CA 722      
510-924 4 Oakland: Trinidad DA CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
510-924 5 Oakland: Trinidad DA CA SNRTCAHFDS0  433E SONIC TELECOM, LLC - CA 722      
510-924 6 Oakland: Trinidad DA CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
510-924 7 Oakland: Trinidad DA CA OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722      
510-924 8 Oakland: Trinidad DA CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-924 9 Oakland: Trinidad DA CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.