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: 971 [Rate centres in NPA 971] [Dial plan for NPA 971]

NXX: 433

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
971-433 A Salem OR PTLDOR69UMD  076F BANDWIDTH.COM CLEC, LLC - OR 672      
971-433 0 Salem OR   076F BANDWIDTH.COM CLEC, LLC - OR 672   2022-09-04   
971-433 1 Salem OR   076F BANDWIDTH.COM CLEC, LLC - OR 672   2022-09-04   
971-433 2 Salem OR   076F BANDWIDTH.COM CLEC, LLC - OR 672   2022-09-04   
971-433 3 Salem OR   076F BANDWIDTH.COM CLEC, LLC - OR 672   2022-09-04   
971-433 4 Salem OR   750E ONVOY, LLC - OR 672   2023-01-07   
971-433 5 Salem OR   750E ONVOY, LLC - OR 672   2023-01-07   
971-433 6 Salem OR   6529 T-MOBILE USA, INC. 672   2023-01-23   
971-433 7 Salem OR   6010 NEW CINGULAR WIRELESS PCS, LLC 672   2022-10-22   
971-433 8 Salem OR   6010 NEW CINGULAR WIRELESS PCS, LLC 672   2022-10-22   
971-433 9 Salem OR   6010 NEW CINGULAR WIRELESS PCS, LLC 672   2022-10-22   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.