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: 420

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
661-420 A Cuyama CA BKFDCA119MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734      
661-420 0 Cuyama CA BKFDCA11X7X  624H ONVOY SPECTRUM, LLC 734      
661-420 1 Cuyama CA BKFDCA119MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 734      
661-420 2 Cuyama CA BKFDCAKTX1X  939H COMMIO, LLC 734      
661-420 3 Cuyama CA BKFDCA11GMD  649C ONVOY, LLC - CA 734      
661-420 4 Cuyama CA BKFDCAKTX6X  965H FRACTEL, LLC 734      
661-420 6 Cuyama CA BKFDCAKTX1X  939H COMMIO, LLC 734      
661-420 7 Cuyama CA BKFDCAKTX1X  939H COMMIO, LLC 734      
661-420 8 Cuyama CA BKFDCAKTX1X  939H COMMIO, LLC 734      
661-420 9 Cuyama CA BKFDCAKTX1X  939H COMMIO, LLC 734      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.