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: 972

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
323-972 A Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-972 0 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-972 1 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-972 2 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-972 3 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-972 4 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-972 5 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-972 6 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-972 7 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-972 8 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      
323-972 9 Montebello CA TRNECAGB7MD  899D METROPCS NETWORKS, LLC 730      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.