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: 543

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-543 A McFarland CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734      
661-543 0 McFarland CA BKFDCA11EMD  981E BANDWIDTH.COM CLEC, LLC - CA 734   2015-09-24   
661-543 1 McFarland CA BKFDCAKTDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 734   2016-12-01   
661-543 2 McFarland CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734   2017-03-16   
661-543 3 McFarland CA BKFDCAKTOMD  073H TELNYX LLC 734   2017-03-24   
661-543 4 McFarland CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734   2017-09-21   
661-543 5 McFarland CA BKFDCA11GMD  649C ONVOY, LLC - CA 734   2017-04-04   
661-543 6 McFarland CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734   2015-12-21   
661-543 7 McFarland CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734   2015-12-21   
661-543 8 McFarland CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734   2015-11-26   
661-543 9 McFarland CA BKFDCA018MD  6010 NEW CINGULAR WIRELESS PCS, LLC 734   2015-09-18   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.