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.

Lost Hills, CA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
661-214 A BKFDCA119MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734      
661-214 0 BKFDCA119MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734      
661-214 1   515J IP HORIZON LLC 734   2006-09-28   
661-214 2   515J IP HORIZON LLC 734   2006-09-28   
661-214 3 BKFDCA11EMD  981E BANDWIDTH.COM CLEC, LLC - CA 734   2010-08-29   
661-214 4 BKFDCA11GMD  649C ONVOY, LLC - CA 734   2021-08-13   
661-214 5 BKFDCA11EMD  981E BANDWIDTH.COM CLEC, LLC - CA 734   2012-09-01   
661-214 6 BKFDCA119MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734   2006-01-14   
661-214 7 BKFDCA11EMD  981E BANDWIDTH.COM CLEC, LLC - CA 734   2013-08-10   
661-214 8 BKFDCA11EMD  981E BANDWIDTH.COM CLEC, LLC - CA 734   2014-03-27   
661-214 9 BKFDCA11EMD  981E BANDWIDTH.COM CLEC, LLC - CA 734   2015-02-21   
661-457 A BKFDCAKTX5X  145J TERRA NOVA TELECOM INC. 734      
661-457 0 BKFDCA11X7X  624H ONVOY SPECTRUM, LLC 734   2024-02-01   
661-457 1   145J TERRA NOVA TELECOM INC. 734   2021-10-02   
661-457 2   145J TERRA NOVA TELECOM INC. 734   2024-05-10   
661-457 5 BKFDCA11EMD  981E BANDWIDTH.COM CLEC, LLC - CA 734   2015-09-24   
661-457 6 BKFDCA11XMD  508J CENTURYLINK COMMUNICATIONS, LLC 734   2015-05-05   
661-457 8 BKFDCA01WMD  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 734   2020-11-09   
661-457 9 BKFDCA11GMD  649C ONVOY, LLC - CA 734   2021-07-22   
661-797 A LSHLCAXFRS5  4420 FRONTIER CALIFORNIA INC. 734      
661-797 0 BKFDCA11GMD  649C ONVOY, LLC - CA 734   2017-04-04   
661-797 1 BKFDCA11GMD  649C ONVOY, LLC - CA 734   2019-02-22   
661-797 2 LSHLCAXFRS5  4420 FRONTIER CALIFORNIA INC. 734      
661-797 3 BKFDCA11GMD  649C ONVOY, LLC - CA 734   2019-02-22   
661-797 4 BKFDCA119MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734   2005-07-30   
661-797 5 BKFDCAKTOMD  073H TELNYX LLC 734   2018-07-06   
661-797 6 LSHLCAXFRS5  4420 FRONTIER CALIFORNIA INC. 734      
661-797 7 LSHLCAXFRS5  4420 FRONTIER CALIFORNIA INC. 734      
661-797 8   145J TERRA NOVA TELECOM INC. 734   2020-11-14   
661-797 9 LSHLCAXFRS5  4420 FRONTIER CALIFORNIA INC. 734      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.