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.

Los Angeles: DA 04, CA

<< 1 2 3 4 5 6

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
323-990 4 LSANCARCD3S  649C ONVOY, LLC - CA 730   2018-12-24   
323-990 5 LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2019-02-28   
323-990 6 LSANCARCD3S  649C ONVOY, LLC - CA 730   2019-03-24   
323-990 7 LSANCARCD3S  649C ONVOY, LLC - CA 730   2019-03-24   
323-990 8 LSANCARCD3S  649C ONVOY, LLC - CA 730   2019-03-24   
323-990 9 LSANCAJW6MD  073H TELNYX LLC 730   2018-05-11   
738-999 A   252F WIDE VOICE, LLC - CA 730   2025-11-21   
738-999 0   252F WIDE VOICE, LLC - CA 730   2025-11-21   
738-999 1   649C ONVOY, LLC - CA 730   2025-11-28   
738-999 2   649C ONVOY, LLC - CA 730   2025-11-28   
738-999 4   252F WIDE VOICE, LLC - CA 730   2025-11-21   
738-999 5   252F WIDE VOICE, LLC - CA 730   2025-11-21   
738-999 7   252F WIDE VOICE, LLC - CA 730   2025-11-21   
738-999 8   252F WIDE VOICE, LLC - CA 730   2025-11-21   
738-999 9   252F WIDE VOICE, LLC - CA 730   2025-11-21   

<< 1 2 3 4 5 6

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.