Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 840 [Rate centres in NPA 840] [Dial plan for NPA 840]

NXX: 286

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
840-286 A Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2026-01-19   
840-286 9 Arrowhead CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2026-01-19   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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