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: 289

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
925-289 A Walnut Creek CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2025-01-12   
925-289 0 Walnut Creek CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2009-04-09   
925-289 1 Walnut Creek CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-01-08   
925-289 2 Walnut Creek CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2009-04-09   
925-289 3 Walnut Creek CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-01-08   
925-289 4 Walnut Creek CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-01-08   
925-289 5 Walnut Creek CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-01-08   
925-289 6 Walnut Creek CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2010-01-12   
925-289 7 Walnut Creek CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2009-12-24   
925-289 8 Walnut Creek CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-02-26   
925-289 9 Walnut Creek CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-02-26   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.