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: 329

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-329 A Los Angeles: DA 12 CA ANHMCANG2MD  4733 PAETEC COMMUNICATIONS, INC. - CA 730      
323-329 0 Los Angeles: DA 12 CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730      
323-329 1 Los Angeles: DA 12 CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730      
323-329 2 Los Angeles: DA 12 CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730      
323-329 3 Los Angeles: DA 12 CA LSANCAJW6MD  073H TELNYX LLC 730      
323-329 4 Los Angeles: DA 12 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-329 5 Los Angeles: DA 12 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-329 6 Los Angeles: DA 12 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-329 7 Los Angeles: DA 12 CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
323-329 8 Los Angeles: DA 12 CA LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730      
323-329 9 Los Angeles: DA 12 CA ANHMCANG2MD  4733 PAETEC COMMUNICATIONS, INC. - CA 730      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.