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: 203

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
251-203 A Belle Fontaine AL MOBLALAZX6Z  604E ONVOY, LLC - AL 480   2024-01-07   
251-203 0 Belle Fontaine AL MOBLALAZX6Z  604E ONVOY, LLC - AL 480   2024-01-07   
251-203 1 Belle Fontaine AL MOBLALAZX6Z  604E ONVOY, LLC - AL 480   2024-01-07   
251-203 2 Belle Fontaine AL   515J IP HORIZON LLC 480   2026-06-28   
251-203 3 Belle Fontaine AL MOBLALAZ13Z  624H ONVOY SPECTRUM, LLC 480   2024-12-05   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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