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: 277

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
228-277 A Gulfport MS BILXMSEDXCY  597F VOIP INNOVATIONS, LLC 484      
228-277 0 Gulfport MS   624H ONVOY SPECTRUM, LLC 484   2023-08-10   
228-277 1 Gulfport MS   597F VOIP INNOVATIONS, LLC 484   2019-08-18   
228-277 2 Gulfport MS   624H ONVOY SPECTRUM, LLC 484   2025-05-13   
228-277 3 Gulfport MS   624H ONVOY SPECTRUM, LLC 484   2025-05-13   
228-277 4 Gulfport MS   624H ONVOY SPECTRUM, LLC 484   2025-05-13   
228-277 5 Gulfport MS   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 484   2025-12-07   
228-277 6 Gulfport MS   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 484   2025-12-07   
228-277 7 Gulfport MS   965H FRACTEL, LLC 484   2019-11-21   
228-277 8 Gulfport MS   719E ONVOY, LLC - MS 484   2024-07-06   
228-277 9 Gulfport MS   719E ONVOY, LLC - MS 484   2024-07-06   

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

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