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: 417 [Rate centres in NPA 417] [Dial plan for NPA 417]

NXX: 774

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
417-774 A Jasper MO SPFDMOTLX7Y  093F ONVOY, LLC - MO 522      
417-774 0 Jasper MO SPFDMOTLXQY  624H ONVOY SPECTRUM, LLC 522   2024-03-28   
417-774 2 Jasper MO SPFDMOTLX7Y  093F ONVOY, LLC - MO 522   2021-05-14   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.