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: 765

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-765 A Montebello CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
323-765 0 Montebello CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2019-03-24   
323-765 1 Montebello CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2016-02-26   
323-765 2 Montebello CA SHOKCA02IMD  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2015-10-23   
323-765 3 Montebello CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2016-02-26   
323-765 4 Montebello CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730   2016-06-16   
323-765 5 Montebello CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730   2016-06-16   
323-765 6 Montebello CA SHOKCA02IMD  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2016-04-04   
323-765 7 Montebello CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2016-07-25   
323-765 8 Montebello CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2016-07-25   
323-765 9 Montebello CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-08-16   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.