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: 492

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
417-492 A Sparta MO SPFDMOMCXMX  939H COMMIO, LLC 522      
417-492 0 Sparta MO SPFDMOMCXMX  939H COMMIO, LLC 522   2022-07-01   
417-492 2 Sparta MO SPFDMOMC12Z  490J BOOST SUBSCRIBERCO L.L.C. 522   2022-09-09   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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