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: 528

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
925-528 A Orinda CA   6529 T-MOBILE USA, INC. 722      
925-528 0 Orinda CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2014-09-26   
925-528 1 Orinda CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2015-06-01   
925-528 2 Orinda CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2014-09-26   
925-528 3 Orinda CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2023-10-29   
925-528 4 Orinda CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2019-03-11   
925-528 5 Orinda CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2019-03-11   
925-528 6 Orinda CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2021-08-13   
925-528 7 Orinda CA SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2018-11-16   
925-528 8 Orinda CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2005-02-10   
925-528 9 Orinda CA   5562 METROPCS, INC. 722      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.