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: 548

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-548 A Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-548 0 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2014-11-06   
323-548 1 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2014-11-06   
323-548 2 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2014-11-06   
323-548 3 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2014-11-06   
323-548 4 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2014-11-06   
323-548 5 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2014-11-06   
323-548 6 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2014-11-06   
323-548 7 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2014-11-06   
323-548 8 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2014-11-06   
323-548 9 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730   2014-11-06   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.