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: 489

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-489 A Lake Charles LA SCTTLA06G02  6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488      
337-489 0 Lake Charles LA   425J CSC WIRELESS, LLC 488   2024-07-25   
337-489 1 Lake Charles LA   425J CSC WIRELESS, LLC 488   2024-07-31   
337-489 6 Lake Charles LA   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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