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: 363

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
971-363 A St Helens OR PTLJORIY0MD  6529 T-MOBILE USA, INC. 672      
971-363 0 St Helens OR   6529 T-MOBILE USA, INC. 672   2022-03-11   
971-363 1 St Helens OR   624H ONVOY SPECTRUM, LLC 672   2025-01-23   
971-363 3 St Helens OR   750E ONVOY, LLC - OR 672   2024-06-07   
971-363 4 St Helens OR   6529 T-MOBILE USA, INC. 672   2024-01-19   
971-363 5 St Helens OR   6529 T-MOBILE USA, INC. 672   2021-12-05   
971-363 6 St Helens OR   6529 T-MOBILE USA, INC. 672   2022-08-25   
971-363 7 St Helens OR   6529 T-MOBILE USA, INC. 672   2021-08-13   
971-363 8 St Helens OR   5562 METROPCS, INC. 672   2020-08-09   
971-363 9 St Helens OR   6529 T-MOBILE USA, INC. 672   2020-06-05   

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

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