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: 220

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
840-220 A Rialto CA LNBHCAXPXQX  981E BANDWIDTH.COM CLEC, LLC - CA 730      
840-220 0 Rialto CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2022-11-13   
840-220 1 Rialto CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2023-10-16   
840-220 2 Rialto CA   649C ONVOY, LLC - CA 730   2023-10-27   
840-220 3 Rialto CA   649C ONVOY, LLC - CA 730   2022-12-12   
840-220 4 Rialto CA   649C ONVOY, LLC - CA 730   2022-12-12   
840-220 5 Rialto CA   649C ONVOY, LLC - CA 730   2023-05-11   
840-220 6 Rialto CA   649C ONVOY, LLC - CA 730   2023-10-27   
840-220 7 Rialto CA   6529 T-MOBILE USA, INC. 730   2023-08-11   
840-220 8 Rialto CA   6529 T-MOBILE USA, INC. 730   2023-08-11   
840-220 9 Rialto CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2023-07-15   

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

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