Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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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   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   649C ONVOY, LLC - CA 734   2014-01-05   
661-231 4 Lebec CA   624H ONVOY SPECTRUM, LLC 734   2021-12-08   
661-231 5 Lebec CA   6010 NEW CINGULAR WIRELESS PCS, LLC 734   2004-10-01   
661-231 6 Lebec CA   981E BANDWIDTH.COM CLEC, LLC - CA 734   2014-03-21   
661-231 7 Lebec CA   981E BANDWIDTH.COM CLEC, LLC - CA 734   2014-08-17   
661-231 8 Lebec CA   981E BANDWIDTH.COM CLEC, LLC - CA 734   2015-02-21   
661-231 9 Lebec CA   981E BANDWIDTH.COM CLEC, LLC - CA 734   2015-09-24   

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

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