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: HNVIALUNX0X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
256-270 A Huntsville AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-274 A Decatur AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-275 A Florence AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-278 A Athens AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-280 A Decatur AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-333 A Red Bay AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-417 A Huntsville AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-460 A Russellville AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-602 A Town Creek AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-664 A Killen AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-667 A Lexington AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-712 A Florence AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-727 A Cullman AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-841 A Cullman AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-867 A Athens AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-978 A Sheffield AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
256-994 A Decatur AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      
938-218 A Huntsville AL 5255 LEVEL 3 COMMUNICATIONS, LLC - AL 477      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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