Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 971 [Rate centres in NPA 971] [Dial plan for NPA 971]

NXX: 399

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
971-399 A Falls City OR PTLDOR13X6X  158H INVOXIO INCORPORATED 672      
971-399 0 Falls City OR   076F BANDWIDTH.COM CLEC, LLC - OR 672   2021-10-11   
971-399 1 Falls City OR   157F PEERLESS NETWORK OF OREGON, LLC - OR 672   2018-12-07   
971-399 2 Falls City OR   3234 LEVEL 3 COMMUNICATIONS, LLC - OR 672   2023-02-23   
971-399 3 Falls City OR   750E ONVOY, LLC - OR 672   2020-02-22   
971-399 4 Falls City OR   624H ONVOY SPECTRUM, LLC 672   2025-01-23   
971-399 5 Falls City OR   9882 ALYRICA TELEPHONE LLC DBA NEXT GEN PHONE SYS-OR 672   2023-11-14   
971-399 7 Falls City OR   750E ONVOY, LLC - OR 672   2020-08-14   
971-399 8 Falls City OR   073H TELNYX LLC 672   2018-10-30   
971-399 9 Falls City OR   158H INVOXIO INCORPORATED 672   2018-10-29   

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

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