Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 228 [Rate centres in NPA 228] [Dial plan for NPA 228]

NXX: 574

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
228-574 A Gulfport MS BILXMSATHMD  7421 AT&T - LOCAL 484      
228-574 0 Gulfport MS   719E ONVOY, LLC - MS 484   2023-09-08   
228-574 2 Gulfport MS   719E ONVOY, LLC - MS 484   2023-01-14   
228-574 3 Gulfport MS   719E ONVOY, LLC - MS 484   2023-01-14   
228-574 4 Gulfport MS   220C LEVEL 3 TELECOM OF MISSISSIPPI, LLC - MS 484   2013-07-29   
228-574 5 Gulfport MS   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 484   2020-07-04   
228-574 6 Gulfport MS   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 484   2020-07-04   
228-574 7 Gulfport MS   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 484   2020-07-04   
228-574 9 Gulfport MS   7421 AT&T - LOCAL 484      

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

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