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: 421

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
256-421 A Grant AL DCTRALGU0MD  349D CHARTER FIBERLINK - ALABAMA, LLC - AL 477      
256-421 0 Grant AL DCTRALGU0MD  349D CHARTER FIBERLINK - ALABAMA, LLC - AL 477      
256-421 1 Grant AL HNVIAL96X7X  490J DISH WIRELESS, LLC 477      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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