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: 233

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-233 A Garden Grove CA ANHMCA01XEY  516C AT&T CORP. 730      
657-233 0 Garden Grove CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
657-233 1 Garden Grove CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
657-233 2 Garden Grove CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
657-233 3 Garden Grove CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
657-233 4 Garden Grove CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
657-233 5 Garden Grove CA ANHMCA01XEY  516C AT&T CORP. 730      
657-233 6 Garden Grove CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
657-233 7 Garden Grove CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
657-233 8 Garden Grove CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
657-233 9 Garden Grove CA LSANCARCD3S  649C ONVOY, LLC - CA 730      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.