Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 337 [Rate centres in NPA 337] [Dial plan for NPA 337]

NXX: 610

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-610 A Iowa LA LFYTLA364MD  939H COMMIO, LLC 488      
337-610 0 Iowa LA   939H COMMIO, LLC 488   2023-11-10   
337-610 1 Iowa LA   939H COMMIO, LLC 488   2023-11-10   
337-610 2 Iowa LA   939H COMMIO, LLC 488   2023-11-10   
337-610 3 Iowa LA   939H COMMIO, LLC 488   2023-11-10   
337-610 4 Iowa LA   939H COMMIO, LLC 488   2023-11-10   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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