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: HNVIALDYDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
256-319 A Madison AL 7451 CENTURYLINK COMMUNICATIONS LLC - AL 477      
256-327 A Huntsville AL 7451 CENTURYLINK COMMUNICATIONS LLC - AL 477      
256-336 A Huntsville AL 7451 CENTURYLINK COMMUNICATIONS LLC - AL 477   2012-08-30   
256-428 A Huntsville AL 7451 CENTURYLINK COMMUNICATIONS LLC - AL 477      
256-544 A Huntsville AL 7451 CENTURYLINK COMMUNICATIONS LLC - AL 477      
256-615 A Cullman AL 7451 CENTURYLINK COMMUNICATIONS LLC - AL 477      
256-616 A Decatur AL 7451 CENTURYLINK COMMUNICATIONS LLC - AL 477      
256-704 A Huntsville AL 7451 CENTURYLINK COMMUNICATIONS LLC - AL 477      
256-705 A Huntsville AL 7451 CENTURYLINK COMMUNICATIONS LLC - AL 477      
256-730 A Huntsville AL 7451 CENTURYLINK COMMUNICATIONS LLC - AL 477      
256-961 A Madison AL 7451 CENTURYLINK COMMUNICATIONS LLC - AL 477      

Last updated: Sun, 29 Sep 2019 14:17:11 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.