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: 390

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
531-390 A Creighton NE   5562 METROPCS, INC. 644   2025-05-22   
531-390 0 Creighton NE   145J TERRA NOVA TELECOM INC. 644   2025-07-18   
531-390 9 Creighton NE   5562 METROPCS, INC. 644   2025-05-22   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.