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: 319 [Rate centres in NPA 319] [Dial plan for NPA 319]

NXX: 328

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-328 A Newhall IA NLBTIAXO2MD  593K MCC TELEPHONY LLC 635      
319-328 2 Newhall IA MNTIIAAKDS0  544H INTEGRATED PATH COMMUNCATIONS, LLC - IA 635   2018-05-14   
319-328 8 Newhall IA CDRRIADTNMD  985E BANDWIDTH.COM CLEC, LLC - IA 635   2008-11-29   
319-328 9 Newhall IA NLBTIAXO2MD  593K MCC TELEPHONY LLC 635   2010-05-06   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.