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: 310 [Rate centres in NPA 310] [Dial plan for NPA 310]

NXX: 919

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
310-919 A Malibu CA SNMNCAXPX3Z  649C ONVOY, LLC - CA 730   2024-01-23   
310-919 0 Malibu CA   649C ONVOY, LLC - CA 730      
310-919 1 Malibu CA   649C ONVOY, LLC - CA 730      
310-919 2 Malibu CA   649C ONVOY, LLC - CA 730      
310-919 3 Malibu CA   649C ONVOY, LLC - CA 730      
310-919 4 Malibu CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2013-03-03   
310-919 5 Malibu CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-11-25   
310-919 6 Malibu CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2013-06-13   
310-919 7 Malibu CA   899D METROPCS NETWORKS, LLC 730   2002-12-24   
310-919 8 Malibu CA   6529 T-MOBILE USA, INC. 730   2002-12-24   
310-919 9 Malibu CA   6529 T-MOBILE USA, INC. 730   2002-12-24   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.