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: 675

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-675 A Los Angeles: DA 03 CA LSANCARCD3S  649C ONVOY, LLC - CA 730      
323-675 0 Los Angeles: DA 03 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2014-12-19   
323-675 1 Los Angeles: DA 03 CA ANHMCA01XEY  516C AT&T CORP. 730   2014-12-22   
323-675 2 Los Angeles: DA 03 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2015-01-03   
323-675 3 Los Angeles: DA 03 CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2015-01-03   
323-675 4 Los Angeles: DA 03 CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730   2015-02-10   
323-675 5 Los Angeles: DA 03 CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730   2015-02-10   
323-675 6 Los Angeles: DA 03 CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730   2015-01-08   
323-675 7 Los Angeles: DA 03 CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730   2015-01-08   
323-675 8 Los Angeles: DA 03 CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730   2015-01-08   
323-675 9 Los Angeles: DA 03 CA ELMNCAFIGT1  6529 T-MOBILE USA, INC. 730   2015-01-08   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.