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: HNVIALUNW02

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
256-222 A Sheffield AL 9236 NETWORK TELEPHONE CORPORATION - AL 477   2005-06-19   
256-250 A Decatur AL 9236 NETWORK TELEPHONE CORPORATION - AL 477   2004-05-14   
256-425 A Huntsville AL 9236 NETWORK TELEPHONE CORPORATION - AL 477      
256-850 A Madison AL 9236 NETWORK TELEPHONE CORPORATION - AL 477      

Last updated: Wed, 10 Apr 2019 01:22:05 UTC

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