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.
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
256-870 4 Madison AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2019-10-10   
256-887 2 Hanceville AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2010-12-03   
256-898 6 Decatur AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2015-11-13   
256-929 6 Huntsville AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2015-08-22   
256-937 7 Huntsville AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2015-12-04   
256-961 2 Madison AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-961 5 Madison AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-961 6 Madison AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-961 7 Madison AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-961 9 Madison AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-963 9 Huntsville AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2016-12-16   
256-964 3 Huntsville AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2014-01-27   
256-964 9 Huntsville AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2016-04-10   
256-978 A Sheffield AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-978 2 Sheffield AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2010-12-13   
256-978 3 Sheffield AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2010-12-25   
256-987 0 Grayson AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2021-11-15   
256-994 A Decatur AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-994 2 Decatur AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2023-05-30   
256-994 3 Decatur AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2023-05-30   
938-218 A Huntsville AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
938-218 2 Huntsville AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2023-11-28   
938-227 2 Huntsville AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2022-05-12   
938-232 2 Huntsville AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2024-11-11   
938-666 4 Huntsville AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477   2018-03-16   

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

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