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: 574

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-574 A De Ridder LA LKCHLADTXDX  150C VOICESTREAM GSM I, LLC 488      
337-574 0 De Ridder LA   939H COMMIO, LLC 488   2022-07-22   
337-574 1 De Ridder LA   749E ONVOY, LLC - LA 488   2023-08-11   
337-574 2 De Ridder LA   749E ONVOY, LLC - LA 488   2023-08-11   
337-574 3 De Ridder LA   749E ONVOY, LLC - LA 488   2023-08-11   
337-574 4 De Ridder LA   749E ONVOY, LLC - LA 488   2023-08-11   
337-574 5 De Ridder LA   749E ONVOY, LLC - LA 488   2023-08-11   
337-574 6 De Ridder LA   749E ONVOY, LLC - LA 488   2024-04-04   
337-574 7 De Ridder LA   749E ONVOY, LLC - LA 488   2024-04-04   
337-574 8 De Ridder LA   749E ONVOY, LLC - LA 488   2023-10-01   
337-574 9 De Ridder LA   150C VOICESTREAM GSM I, LLC 488   2022-04-10   

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

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