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: 897

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
510-897 A Fremont-Newark: Oliver DA CA SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
510-897 0 Fremont-Newark: Oliver DA CA SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2015-03-30   
510-897 1 Fremont-Newark: Oliver DA CA SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
510-897 2 Fremont-Newark: Oliver DA CA SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
510-897 3 Fremont-Newark: Oliver DA CA SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2014-06-06   
510-897 4 Fremont-Newark: Oliver DA CA SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
510-897 5 Fremont-Newark: Oliver DA CA OKLDCAMP1MD  4733 PAETEC COMMUNICATIONS, INC. - CA 722   2014-06-26   
510-897 6 Fremont-Newark: Oliver DA CA FRMTCAEDDS2  7262 XO CALIFORNIA, INC. 722   2005-08-26   
510-897 7 Fremont-Newark: Oliver DA CA OKLDCAEBDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722   2002-09-17   
510-897 8 Fremont-Newark: Oliver DA CA SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
510-897 9 Fremont-Newark: Oliver DA CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-07-26   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.