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: 657 [Rate centres in NPA 657] [Dial plan for NPA 657]

NXX: 999

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-999 A Anaheim CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
657-999 0 Anaheim CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
657-999 1 Anaheim CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
657-999 2 Anaheim CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
657-999 3 Anaheim CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
657-999 4 Anaheim CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
657-999 5 Anaheim CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
657-999 6 Anaheim CA LSANCARCD3S  649C ONVOY, LLC - CA 730      
657-999 7 Anaheim CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
657-999 8 Anaheim CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
657-999 9 Anaheim CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.