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: 561

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-561 A Duson LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 488      
337-561 0 Duson LA   749E ONVOY, LLC - LA 488   2016-05-30   
337-561 1 Duson LA   749E ONVOY, LLC - LA 488   2016-05-30   
337-561 2 Duson LA   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488   2017-07-02   
337-561 3 Duson LA   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488   2019-06-23   
337-561 4 Duson LA   153F BANDWIDTH.COM CLEC, LLC - LA 488   2021-12-05   
337-561 5 Duson LA   318J COMCAST IP PHONE, LLC 488   2018-04-11   
337-561 6 Duson LA   749E ONVOY, LLC - LA 488   2021-02-25   
337-561 7 Duson LA   749E ONVOY, LLC - LA 488   2021-02-25   
337-561 8 Duson LA   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488   2017-12-26   
337-561 9 Duson LA   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 488   2017-12-26   

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

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