Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Grant, AL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
256-421 A   792K CHARTER IP ENABLED SERVICES, LLC 477   2025-03-25   
256-421 0   792K CHARTER IP ENABLED SERVICES, LLC 477   2018-02-19   
256-421 1 HNVIAL96X7X  490J DISH WIRELESS, LLC 477   2022-09-05   
256-728 A NWHPALXADS2  0308 NEW HOPE TEL. COOP. 477      

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

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