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: 944

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-944 A Los Angeles: DA 13 CA LSANCA08DS0  9740 PACIFIC BELL 730      
323-944 0 Los Angeles: DA 13 CA LSANCA08DS0  9740 PACIFIC BELL 730      
323-944 1 Los Angeles: DA 13 CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2007-08-10   
323-944 2 Los Angeles: DA 13 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-04-05   
323-944 3 Los Angeles: DA 13 CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2016-10-14   
323-944 4 Los Angeles: DA 13 CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730   2007-06-23   
323-944 5 Los Angeles: DA 13 CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730   2007-06-23   
323-944 6 Los Angeles: DA 13 CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730   2007-06-23   
323-944 7 Los Angeles: DA 13 CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730   2007-06-23   
323-944 8 Los Angeles: DA 13 CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730   2007-06-23   
323-944 9 Los Angeles: DA 13 CA TRNECAGBGT3  899D METROPCS NETWORKS, LLC 730   2007-06-23   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.