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: 590

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-590 A Los Angeles: DA 14 CA BRBNCAIZ9MD  6664 SPRINT SPECTRUM L.P. 730      
323-590 0 Los Angeles: DA 14 CA   6664 SPRINT SPECTRUM L.P. 730   2007-09-28   
323-590 1 Los Angeles: DA 14 CA   6664 SPRINT SPECTRUM L.P. 730   2007-09-28   
323-590 2 Los Angeles: DA 14 CA   6664 SPRINT SPECTRUM L.P. 730   2007-09-28   
323-590 3 Los Angeles: DA 14 CA   6664 SPRINT SPECTRUM L.P. 730   2007-09-28   
323-590 4 Los Angeles: DA 14 CA   6664 SPRINT SPECTRUM L.P. 730   2007-09-28   
323-590 5 Los Angeles: DA 14 CA   6664 SPRINT SPECTRUM L.P. 730   2007-09-28   
323-590 6 Los Angeles: DA 14 CA   6664 SPRINT SPECTRUM L.P. 730   2007-09-28   
323-590 7 Los Angeles: DA 14 CA   6664 SPRINT SPECTRUM L.P. 730   2007-09-28   
323-590 8 Los Angeles: DA 14 CA   6664 SPRINT SPECTRUM L.P. 730   2007-09-28   
323-590 9 Los Angeles: DA 14 CA   6664 SPRINT SPECTRUM L.P. 730   2007-09-28   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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