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
417-879 8 Strafford MO 624H ONVOY SPECTRUM, LLC 522   2024-03-28   
417-897 3 Springfield MO 624H ONVOY SPECTRUM, LLC 522   2022-06-25   
417-897 4 Springfield MO 624H ONVOY SPECTRUM, LLC 522   2022-06-25   
417-897 5 Springfield MO 624H ONVOY SPECTRUM, LLC 522   2022-05-15   
417-897 6 Springfield MO 624H ONVOY SPECTRUM, LLC 522   2022-05-15   
417-897 7 Springfield MO 624H ONVOY SPECTRUM, LLC 522   2022-04-18   
417-901 A Springfield MO 624H ONVOY SPECTRUM, LLC 522      
417-901 5 Springfield MO 624H ONVOY SPECTRUM, LLC 522   2021-10-16   
417-901 6 Springfield MO 624H ONVOY SPECTRUM, LLC 522   2021-10-16   
417-901 7 Springfield MO 624H ONVOY SPECTRUM, LLC 522   2021-10-16   
417-901 8 Springfield MO 624H ONVOY SPECTRUM, LLC 522   2021-10-16   
417-901 9 Springfield MO 624H ONVOY SPECTRUM, LLC 522   2021-06-14   
417-929 9 Rogersville MO 624H ONVOY SPECTRUM, LLC 522   2024-03-28   

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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