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.

Switch: HNVIAL96X4X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
256-263 A Florence AL 7421 AT&T - LOCAL 477      
256-429 A Huntsville AL 7421 AT&T - LOCAL 477      
256-795 A Athens AL 7421 AT&T - LOCAL 477      
256-898 A Decatur AL 7421 AT&T - LOCAL 477      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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