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: 892

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
925-892 A Pleasanton CA OKLDCAAN5MD  7379 MATRIX TELECOM, LLC. S/I/I TNCI - CA 722      
925-892 0 Pleasanton CA   939H COMMIO, LLC 722   2021-10-14   
925-892 1 Pleasanton CA   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
925-892 2 Pleasanton CA   649C ONVOY, LLC - CA 722      
925-892 3 Pleasanton CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-05-04   
925-892 4 Pleasanton CA   649C ONVOY, LLC - CA 722   2013-11-25   
925-892 5 Pleasanton CA   939H COMMIO, LLC 722   2021-10-14   
925-892 6 Pleasanton CA   939H COMMIO, LLC 722   2021-10-14   
925-892 7 Pleasanton CA   939H COMMIO, LLC 722   2021-10-14   
925-892 8 Pleasanton CA   649C ONVOY, LLC - CA 722   2013-11-25   
925-892 9 Pleasanton CA   649C ONVOY, LLC - CA 722      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.