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: RCFRALXADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
256-377 A Rockford AL 9789 CENTURYTEL TEL AL LLC (NORTHERN) DBA CENTURYLINK 476      
256-377 1 Rockford AL 9789 CENTURYTEL TEL AL LLC (NORTHERN) DBA CENTURYLINK 476      
256-377 2 Rockford AL 9789 CENTURYTEL TEL AL LLC (NORTHERN) DBA CENTURYLINK 476      
256-377 4 Rockford AL 9789 CENTURYTEL TEL AL LLC (NORTHERN) DBA CENTURYLINK 476      
256-935 4 Rockford AL 072F BANDWIDTH.COM CLEC, LLC - AL 476   2021-07-03   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.