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: 291

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
228-291 A Tanner-Williams MS MOBLALAZX6Z  719E ONVOY, LLC - MS 480      
228-291 0 Tanner-Williams MS MOBLALAZ13Z  624H ONVOY SPECTRUM, LLC 480   2023-11-27   
228-291 1 Tanner-Williams MS MOBLALAZ13Z  624H ONVOY SPECTRUM, LLC 480   2023-11-27   
228-291 2 Tanner-Williams MS MOBLALAZX6Z  719E ONVOY, LLC - MS 480   2023-11-13   
228-291 3 Tanner-Williams MS MOBLALAZ13Z  624H ONVOY SPECTRUM, LLC 480   2023-11-27   
228-291 8 Tanner-Williams MS MOBLALAZ13Z  624H ONVOY SPECTRUM, LLC 480   2023-11-27   
228-291 9 Tanner-Williams MS MOBLALAZ13Z  624H ONVOY SPECTRUM, LLC 480   2023-11-27   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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