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: 413

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
319-413 A Troy Mills IA CDRRIADTKMD  221F ONVOY, LLC - IA 635      
319-413 0 Troy Mills IA CDRRIADTHMD  624H ONVOY SPECTRUM, LLC 635   2024-03-22   
319-413 1 Troy Mills IA CDRRIADTKMD  221F ONVOY, LLC - IA 635   2023-06-15   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.