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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
417-279 A Lamar MO 093F ONVOY, LLC - MO 522      
417-404 A Pierce City MO 093F ONVOY, LLC - MO 522      
417-409 A Springfield MO 093F ONVOY, LLC - MO 522      
417-417 A Joplin MO 093F ONVOY, LLC - MO 522      
417-427 A Springfield MO 093F ONVOY, LLC - MO 522      
417-429 A Springfield MO 093F ONVOY, LLC - MO 522      
417-510 A Lockwood MO 093F ONVOY, LLC - MO 522      
417-528 A Clever MO 093F ONVOY, LLC - MO 522      
417-530 A Springfield MO 093F ONVOY, LLC - MO 522      
417-609 A Webb City MO 093F ONVOY, LLC - MO 522      
417-774 A Jasper MO 093F ONVOY, LLC - MO 522      
417-815 A Springfield MO 093F ONVOY, LLC - MO 522      
417-942 A Springfield MO 093F ONVOY, LLC - MO 522   2025-02-02   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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