Local Calling Guide

Area code/prefix search

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NPA: 840 [Rate centres in NPA 840] [Dial plan for NPA 840]

NXX: 242

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
840-242 A Upland CA ONTRCAXPXPY  649C ONVOY, LLC - CA 730      
840-242 0 Upland CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2023-12-19   
840-242 1 Upland CA   939H COMMIO, LLC 730   2024-01-28   
840-242 2 Upland CA   649C ONVOY, LLC - CA 730   2023-11-01   
840-242 3 Upland CA   939H COMMIO, LLC 730   2024-01-28   
840-242 4 Upland CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-02-10   
840-242 5 Upland CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2024-03-23   
840-242 6 Upland CA   6529 T-MOBILE USA, INC. 730   2024-02-22   
840-242 7 Upland CA   6529 T-MOBILE USA, INC. 730   2023-12-01   
840-242 8 Upland CA   6529 T-MOBILE USA, INC. 730   2023-12-01   
840-242 9 Upland CA   6529 T-MOBILE USA, INC. 730   2023-12-01   

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

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