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: 900

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
840-900 A Rialto CA LSANCAJWIMD  965H FRACTEL, LLC 730      
840-900 0 Rialto CA LSANCAJWIMD  965H FRACTEL, LLC 730   2021-02-25   
840-900 1 Rialto CA RVSDCALBCM4  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2021-04-05   
840-900 2 Rialto CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2021-07-30   
840-900 3 Rialto CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2021-07-30   
840-900 4 Rialto CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2021-07-30   
840-900 5 Rialto CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2021-07-30   
840-900 6 Rialto CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2022-04-03   
840-900 7 Rialto CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2022-04-03   
840-900 8 Rialto CA RVSDCALBCM4  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2021-03-31   
840-900 9 Rialto CA LSANCAJWIMD  965H FRACTEL, LLC 730   2021-02-25   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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