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: 535

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
971-535 A Clackamas OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2026-06-15   
971-535 0 Clackamas OR PTLDORWADS2  750E ONVOY, LLC - OR 672   2026-06-15   
971-535 1 Clackamas OR   750E ONVOY, LLC - OR 672   2026-08-01   
971-535 2 Clackamas OR   750E ONVOY, LLC - OR 672   2026-08-01   
971-535 3 Clackamas OR   750E ONVOY, LLC - OR 672   2026-08-01   
971-535 4 Clackamas OR   157F PEERLESS NETWORK OF OREGON, LLC - OR 672   2026-08-24   
971-535 5 Clackamas OR   750E ONVOY, LLC - OR 672   2026-09-04   
971-535 6 Clackamas OR   750E ONVOY, LLC - OR 672   2026-09-04   
971-535 7 Clackamas OR   750E ONVOY, LLC - OR 672   2026-09-11   
971-535 8 Clackamas OR   750E ONVOY, LLC - OR 672   2026-08-01   
971-535 9 Clackamas OR   750E ONVOY, LLC - OR 672   2026-08-01   

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.