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: 290

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
840-290 A Upland CA   649C ONVOY, LLC - CA 730   2026-09-14   
840-290 0 Upland CA   649C ONVOY, LLC - CA 730   2026-09-14   
840-290 1 Upland CA   624H ONVOY SPECTRUM, LLC 730   2026-09-15   
840-290 2 Upland CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2026-09-20   
840-290 8 Upland CA   649C ONVOY, LLC - CA 730   2026-09-15   
840-290 9 Upland CA   649C ONVOY, LLC - CA 730   2026-09-15   

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

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