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: 661 [Rate centres in NPA 661] [Dial plan for NPA 661]

NXX: 450

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-450 A Palmdale: Agua Dulce DA CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
661-450 0 Palmdale: Agua Dulce DA CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
661-450 1 Palmdale: Agua Dulce DA CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
661-450 2 Palmdale: Agua Dulce DA CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2005-11-05   
661-450 3 Palmdale: Agua Dulce DA CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2013-12-14   
661-450 4 Palmdale: Agua Dulce DA CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
661-450 5 Palmdale: Agua Dulce DA CA SIMICACNGT1  899D METROPCS NETWORKS, LLC 730   2009-12-21   
661-450 6 Palmdale: Agua Dulce DA CA LSANCAJW6MD  073H TELNYX LLC 730   2017-08-14   
661-450 7 Palmdale: Agua Dulce DA CA SIMICACNGT1  899D METROPCS NETWORKS, LLC 730   2011-02-21   
661-450 8 Palmdale: Agua Dulce DA CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2009-02-25   
661-450 9 Palmdale: Agua Dulce DA CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2008-10-23   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.