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: 300

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
531-300 A Creston NE OMAHNENWXPX  549E ONVOY, LLC - NE 644      
531-300 0 Creston NE OMAHNENWXPX  549E ONVOY, LLC - NE 644      
531-300 1 Creston NE OMAHNENWXPX  549E ONVOY, LLC - NE 644      
531-300 2 Creston NE OMAHNENWXTX  995E BANDWIDTH.COM CLEC, LLC - NE 644      
531-300 3 Creston NE OMAHNENWXPX  549E ONVOY, LLC - NE 644      
531-300 4 Creston NE OMAHNENWXPX  549E ONVOY, LLC - NE 644      
531-300 5 Creston NE OMAHNENWXPX  549E ONVOY, LLC - NE 644      
531-300 6 Creston NE OMAHNENWXTX  995E BANDWIDTH.COM CLEC, LLC - NE 644      
531-300 7 Creston NE OMAHNENWXJX  508J CENTURYLINK COMMUNICATIONS, LLC 644      
531-300 8 Creston NE HMPHNE040MD  960H MIDSTATES DATA TRANSPORT, LLC - NE 644      
531-300 9 Creston NE OMAKNEYWDS1  478H AIRUS, INC. - NE 644      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.