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: 436

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
971-436 A Gresham OR PTLDORWAX3Y  939H COMMIO, LLC 672      
971-436 0 Gresham OR PTLDORWAX3Y  939H COMMIO, LLC 672   2022-11-18   
971-436 1 Gresham OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2023-10-16   
971-436 2 Gresham OR   750E ONVOY, LLC - OR 672   2024-02-04   
971-436 3 Gresham OR   939H COMMIO, LLC 672   2024-03-03   
971-436 4 Gresham OR   939H COMMIO, LLC 672   2024-03-03   
971-436 5 Gresham OR PTLGORIA7MD  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672   2024-01-05   
971-436 6 Gresham OR   624H ONVOY SPECTRUM, LLC 672   2024-05-28   
971-436 7 Gresham OR PTLDOR13DS4  157F PEERLESS NETWORK OF OREGON, LLC - OR 672   2023-10-30   
971-436 8 Gresham OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2023-10-16   
971-436 9 Gresham OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2023-10-16   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.