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: 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   939H COMMIO, LLC 672   2022-11-18   
971-436 1 Gresham OR   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   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   157F PEERLESS NETWORK OF OREGON, LLC - OR 672   2023-10-30   
971-436 8 Gresham OR   750E ONVOY, LLC - OR 672   2023-10-16   
971-436 9 Gresham OR   750E ONVOY, LLC - OR 672   2023-10-16   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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