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: 306

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
531-306 A Murray NE LNCLNEXLX5X  3233 LEVEL 3 COMMUNICATIONS, LLC - NE 958      
531-306 0 Murray NE   624H ONVOY SPECTRUM, LLC 958      
531-306 1 Murray NE LNCLNEXLX5X  3233 LEVEL 3 COMMUNICATIONS, LLC - NE 958      
531-306 7 Murray NE LNCLNEXLXFX  549E ONVOY, LLC - NE 958      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.