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: 666

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
909-666 A Rialto CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
909-666 0 Rialto CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-06-25   
909-666 1 Rialto CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-06-25   
909-666 2 Rialto CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2011-06-25   
909-666 3 Rialto CA   899D METROPCS NETWORKS, LLC 730   2011-07-09   
909-666 6 Rialto CA   145J TERRA NOVA TELECOM INC. 730   2021-01-10   
909-666 9 Rialto CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2011-10-29   

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

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