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: 219

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
531-219 A Fremont NE OMAHNENWX4Y  7421 AT&T - LOCAL 644      
531-219 0 Fremont NE   5807 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 644   2022-06-07   
531-219 1 Fremont NE   6701 AERIAL COMMUNICATIONS, INC. 644   2023-04-03   
531-219 2 Fremont NE   5807 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NE 644   2024-08-23   
531-219 3 Fremont NE   6701 AERIAL COMMUNICATIONS, INC. 644   2023-04-03   
531-219 4 Fremont NE   549E ONVOY, LLC - NE 644   2021-03-13   
531-219 5 Fremont NE   549E ONVOY, LLC - NE 644   2021-03-13   
531-219 6 Fremont NE   549E ONVOY, LLC - NE 644   2021-04-12   
531-219 7 Fremont NE   549E ONVOY, LLC - NE 644   2021-04-12   
531-219 8 Fremont NE   549E ONVOY, LLC - NE 644   2021-04-12   
531-219 9 Fremont NE   7421 AT&T - LOCAL 644   2017-10-02   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.