Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 256 [Rate centres in NPA 256] [Dial plan for NPA 256]

NXX: 707

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
256-707 A Huntsville AL HNVIALMTQMD  6630 USA MOBILITY WIRELESS, INC. 477   2024-01-16   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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