Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 909 [Rate centres in NPA 909] [Dial plan for NPA 909]

NXX: 237

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
909-237 A Rialto CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
909-237 0 Rialto CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2025-05-02   
909-237 1 Rialto CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2026-06-06   
909-237 2 Rialto CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2007-10-16   
909-237 3 Rialto CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2012-07-06   
909-237 4 Rialto CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2026-09-20   
909-237 5 Rialto CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2026-11-06   
909-237 7 Rialto CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2026-11-25   
909-237 8 Rialto CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-08-11   
909-237 9 Rialto CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2026-12-20   

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

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