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.

NPA: 531 [Rate centres in NPA 531] [Dial plan for NPA 531]

NXX: 422

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
531-422 A Omaha NE   7144 TELEPORT COMMUNICATIONS AMERICA, LLC - NE 644   2025-07-28   
531-422 0 Omaha NE   7144 TELEPORT COMMUNICATIONS AMERICA, LLC - NE 644   2025-07-28   
531-422 1 Omaha NE   7144 TELEPORT COMMUNICATIONS AMERICA, LLC - NE 644   2025-07-28   
531-422 2 Omaha NE   7144 TELEPORT COMMUNICATIONS AMERICA, LLC - NE 644   2025-07-28   
531-422 3 Omaha NE   7144 TELEPORT COMMUNICATIONS AMERICA, LLC - NE 644   2025-07-28   
531-422 4 Omaha NE   7144 TELEPORT COMMUNICATIONS AMERICA, LLC - NE 644   2025-07-28   
531-422 5 Omaha NE   7144 TELEPORT COMMUNICATIONS AMERICA, LLC - NE 644   2025-07-28   
531-422 6 Omaha NE   7144 TELEPORT COMMUNICATIONS AMERICA, LLC - NE 644   2025-07-28   
531-422 7 Omaha NE   7144 TELEPORT COMMUNICATIONS AMERICA, LLC - NE 644   2025-07-28   
531-422 8 Omaha NE   7144 TELEPORT COMMUNICATIONS AMERICA, LLC - NE 644   2025-07-28   
531-422 9 Omaha NE   7144 TELEPORT COMMUNICATIONS AMERICA, LLC - NE 644   2025-07-28   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.