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: 831 [Rate centres in NPA 831] [Dial plan for NPA 831]

NXX: 609

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
831-609 A Ben Lomond CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
831-609 0 Ben Lomond CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2015-12-30   
831-609 1 Ben Lomond CA   515J IP HORIZON LLC 722      
831-609 2 Ben Lomond CA   515J IP HORIZON LLC 722      
831-609 3 Ben Lomond CA SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2013-03-29   
831-609 4 Ben Lomond CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-05-09   
831-609 5 Ben Lomond CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2005-08-07   
831-609 6 Ben Lomond CA OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2006-05-05   
831-609 7 Ben Lomond CA SNVACAHZ0MD  508J CENTURYLINK COMMUNICATIONS, LLC 722   2014-05-20   
831-609 8 Ben Lomond CA SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2010-05-17   
831-609 9 Ben Lomond CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2015-12-30   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.