Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 251 [Rate centres in NPA 251] [Dial plan for NPA 251]

NXX: 397

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
251-397 A Dauphin Island AL MOBLALAZX6Z  604E ONVOY, LLC - AL 480      
251-397 0 Dauphin Island AL MOBLALAZX6Z  604E ONVOY, LLC - AL 480   2021-03-15   
251-397 1 Dauphin Island AL MOBLALAZX6Z  604E ONVOY, LLC - AL 480   2021-03-15   
251-397 2 Dauphin Island AL MOBLALAZX6Z  604E ONVOY, LLC - AL 480   2021-03-26   
251-397 3 Dauphin Island AL MOBLALAZX6Z  604E ONVOY, LLC - AL 480   2021-03-26   
251-397 4 Dauphin Island AL MOBLALAZX6Z  604E ONVOY, LLC - AL 480   2021-03-26   
251-397 5 Dauphin Island AL MOBLALAZXUY  072F BANDWIDTH.COM CLEC, LLC - AL 480   2021-04-15   
251-397 7 Dauphin Island AL MOBLALAZ13Z  624H ONVOY SPECTRUM, LLC 480   2023-04-29   
251-397 8 Dauphin Island AL MOBLALAZX6Z  604E ONVOY, LLC - AL 480   2021-07-29   
251-397 9 Dauphin Island AL MOBLALAZ13Z  624H ONVOY SPECTRUM, LLC 480   2024-09-28   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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