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: 231

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-231 A Lebec CA BKFDCA11EMD  981E BANDWIDTH.COM CLEC, LLC - CA 734      
661-231 0 Lebec CA BKFDCA11EMD  981E BANDWIDTH.COM CLEC, LLC - CA 734   2010-08-29   
661-231 1 Lebec CA   515J IP HORIZON LLC 734      
661-231 2 Lebec CA   515J IP HORIZON LLC 734      
661-231 3 Lebec CA BKFDCA11GMD  649C ONVOY, LLC - CA 734   2014-01-05   
661-231 4 Lebec CA BKFDCA11X7X  624H ONVOY SPECTRUM, LLC 734   2021-12-08   
661-231 5 Lebec CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734   2004-10-01   
661-231 6 Lebec CA BKFDCA11EMD  981E BANDWIDTH.COM CLEC, LLC - CA 734   2014-03-21   
661-231 7 Lebec CA BKFDCA11EMD  981E BANDWIDTH.COM CLEC, LLC - CA 734   2014-08-17   
661-231 8 Lebec CA BKFDCA11EMD  981E BANDWIDTH.COM CLEC, LLC - CA 734   2015-02-21   
661-231 9 Lebec CA BKFDCA11EMD  981E BANDWIDTH.COM CLEC, LLC - CA 734   2015-09-24   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.