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: 638

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
251-638 A Mobile AL SMMSAL13DS0  947G TELEPAK NETWORKS, INC. - AL 480      

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

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