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: 791

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
971-791 A Bay City OR PTLDORWADS2  750E ONVOY, LLC - OR 672      
971-791 1 Bay City OR   624H ONVOY SPECTRUM, LLC 672   2021-07-24   
971-791 2 Bay City OR   750E ONVOY, LLC - OR 672   2020-06-03   
971-791 3 Bay City OR   750E ONVOY, LLC - OR 672   2020-06-03   
971-791 4 Bay City OR   506J TWILIO INTERNATIONAL INC 672   2021-01-15   
971-791 5 Bay City OR   624H ONVOY SPECTRUM, LLC 672   2021-10-21   
971-791 6 Bay City OR   750E ONVOY, LLC - OR 672   2020-08-14   
971-791 7 Bay City OR   750E ONVOY, LLC - OR 672   2020-08-14   
971-791 9 Bay City OR   516J TON80 COMMUNICATIONS LLC 672   2022-04-21   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.