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: 925 [Rate centres in NPA 925] [Dial plan for NPA 925]

NXX: 587

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
925-587 A Dublin-San Ramon CA SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
925-587 1 Dublin-San Ramon CA OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2014-07-14   
925-587 2 Dublin-San Ramon CA OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2020-02-21   
925-587 3 Dublin-San Ramon CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-10-20   
925-587 4 Dublin-San Ramon CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-07-11   
925-587 5 Dublin-San Ramon CA FRMTCAEDDS2  7262 XO CALIFORNIA, INC. 722   2010-04-19   
925-587 6 Dublin-San Ramon CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-03-29   
925-587 7 Dublin-San Ramon CA SNVACAHZ0MD  508J CENTURYLINK COMMUNICATIONS, LLC 722   2014-03-28   
925-587 8 Dublin-San Ramon CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-03-29   
925-587 9 Dublin-San Ramon CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-10-20   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.