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: 323 [Rate centres in NPA 323] [Dial plan for NPA 323]

NXX: 410

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-410 A Los Angeles: DA 02 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-410 0 Los Angeles: DA 02 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-410 1 Los Angeles: DA 02 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-410 2 Los Angeles: DA 02 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-410 3 Los Angeles: DA 02 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-410 4 Los Angeles: DA 02 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-410 5 Los Angeles: DA 02 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-410 6 Los Angeles: DA 02 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-410 7 Los Angeles: DA 02 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-410 8 Los Angeles: DA 02 CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-04-01   
323-410 9 Los Angeles: DA 02 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.