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: 308 [Rate centres in NPA 308] [Dial plan for NPA 308]

NXX: 403

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
308-403 A Grand Island NE GDISNENWZMD  073H TELNYX LLC 646      
308-403 0 Grand Island NE   073H TELNYX LLC 646   2021-05-06   
308-403 1 Grand Island NE   549E ONVOY, LLC - NE 646   2023-08-11   
308-403 2 Grand Island NE   549E ONVOY, LLC - NE 646   2023-08-11   
308-403 3 Grand Island NE   549E ONVOY, LLC - NE 646   2023-08-11   
308-403 4 Grand Island NE   549E ONVOY, LLC - NE 646   2023-08-11   
308-403 5 Grand Island NE   549E ONVOY, LLC - NE 646   2023-08-11   
308-403 6 Grand Island NE   549E ONVOY, LLC - NE 646   2023-08-11   
308-403 7 Grand Island NE   549E ONVOY, LLC - NE 646   2023-08-11   
308-403 8 Grand Island NE   549E ONVOY, LLC - NE 646   2023-08-11   
308-403 9 Grand Island NE   549E ONVOY, LLC - NE 646   2023-08-11   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.