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: 501

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
251-501 A Mobile AL MOBLALAZ24Z  506J TWILIO INTERNATIONAL, INC. 480      
251-501 0 Mobile AL   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 480   2020-12-19   
251-501 1 Mobile AL   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 480   2020-12-19   
251-501 2 Mobile AL   604E ONVOY, LLC - AL 480   2020-12-01   
251-501 3 Mobile AL   604E ONVOY, LLC - AL 480   2020-12-01   
251-501 4 Mobile AL   604E ONVOY, LLC - AL 480   2020-12-01   
251-501 5 Mobile AL   506J TWILIO INTERNATIONAL, INC. 480   2020-11-30   
251-501 6 Mobile AL   604E ONVOY, LLC - AL 480   2020-12-01   
251-501 7 Mobile AL   604E ONVOY, LLC - AL 480   2020-12-01   
251-501 8 Mobile AL   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 480   2020-12-19   
251-501 9 Mobile AL   6214 NEW CINGULAR WIRELESS PCS, LLC - GA 480   2020-12-19   

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

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