Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 417 [Rate centres in NPA 417] [Dial plan for NPA 417]

NXX: 558

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
417-558 A Springfield MO SPFDMOMCX6Y  700J WAVENATION, LLC 522   2026-01-30   
417-558 0 Springfield MO SPFDMOMCX6Y  700J WAVENATION, LLC 522   2026-01-30   
417-558 1 Springfield MO   093F ONVOY, LLC - MO 522   2026-08-10   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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