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.

Boron, CA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
442-447 A VTVLCAXAX0Y  624H ONVOY SPECTRUM, LLC 730      
442-447 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-07-22   
442-447 1   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-08-26   
442-447 2   829J PAETEC ITEL, LLC 730   2026-01-04   
442-447 4   624H ONVOY SPECTRUM, LLC 730   2023-06-15   
442-447 5   624H ONVOY SPECTRUM, LLC 730   2023-06-15   
760-306 A LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
760-306 1   624H ONVOY SPECTRUM, LLC 730   2021-12-13   
760-306 3   981E BANDWIDTH.COM CLEC, LLC - CA 730   2010-08-28   
760-306 4   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2005-07-26   
760-306 5   649C ONVOY, LLC - CA 730   2012-12-30   
760-306 6   508J CENTURYLINK COMMUNICATIONS, LLC 730   2014-06-27   
760-306 7   624H ONVOY SPECTRUM, LLC 730   2021-12-13   
760-306 8   515J IP HORIZON LLC 730   2015-09-19   
760-491 A VTVLCAXAX5Y  649C ONVOY, LLC - CA 730   2024-01-23   
760-491 0   649C ONVOY, LLC - CA 730      
760-491 1   981E BANDWIDTH.COM CLEC, LLC - CA 730      
760-491 2   624H ONVOY SPECTRUM, LLC 730   2021-12-13   
760-491 3   624H ONVOY SPECTRUM, LLC 730   2021-12-13   
760-491 4   649C ONVOY, LLC - CA 730      
760-491 5   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2013-03-28   
760-491 6   649C ONVOY, LLC - CA 730   2006-01-13   
760-491 7   649C ONVOY, LLC - CA 730   2008-08-25   
760-491 8   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2020-08-14   
760-762 A BORNCAXFRS3  4420 FRONTIER CALIFORNIA INC. 730      
760-762 0   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2020-03-08   
760-762 1   4420 FRONTIER CALIFORNIA INC. 730      
760-762 2   973E RACE TELECOMMUNICATIONS, INC. - CA 730   2016-11-14   
760-762 3   649C ONVOY, LLC - CA 730   2019-09-09   
760-762 4   981E BANDWIDTH.COM CLEC, LLC - CA 730   2015-09-28   
760-762 5   4420 FRONTIER CALIFORNIA INC. 730      
760-762 6   4420 FRONTIER CALIFORNIA INC. 730      
760-762 7   4420 FRONTIER CALIFORNIA INC. 730      
760-762 8   624H ONVOY SPECTRUM, LLC 730   2021-12-13   
760-762 9   145J TERRA NOVA TELECOM INC. 730   2021-10-02   
760-769 A NEDWCAXFRS4  4420 FRONTIER CALIFORNIA INC. 730      
760-769 1   073H TELNYX LLC 730   2018-05-11   
760-769 2   707H INTEGRATED PATH COMMUNICATIONS, LLC - CA 730   2018-05-08   
760-769 3   776C CHARTER FIBERLINK CA-CCO, LLC - CA 730   2013-02-24   
760-769 4   4420 FRONTIER CALIFORNIA INC. 730      
760-769 5   649C ONVOY, LLC - CA 730   2013-12-02   
760-769 6   4420 FRONTIER CALIFORNIA INC. 730      
760-769 7   649C ONVOY, LLC - CA 730   2013-12-02   
760-769 8   649C ONVOY, LLC - CA 730   2016-03-14   
760-769 9   649C ONVOY, LLC - CA 730   2016-03-14   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.