Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 951 [Rate centres in NPA 951] [Dial plan for NPA 951]

NXX: 421

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
951-421 A Moreno CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      
951-421 0 Moreno CA   649C ONVOY, LLC - CA 730   2016-03-07   
951-421 1 Moreno CA   649C ONVOY, LLC - CA 730   2016-03-07   
951-421 2 Moreno CA   899D METROPCS NETWORKS, LLC 730   2016-03-21   
951-421 3 Moreno CA   6529 T-MOBILE USA, INC. 730   2015-11-07   
951-421 4 Moreno CA   6529 T-MOBILE USA, INC. 730   2015-11-07   
951-421 5 Moreno CA   6529 T-MOBILE USA, INC. 730   2015-11-07   
951-421 6 Moreno CA   899D METROPCS NETWORKS, LLC 730   2016-07-31   
951-421 7 Moreno CA   776C CHARTER FIBERLINK CA-CCO, LLC - CA 730   2016-07-21   
951-421 8 Moreno CA   981E BANDWIDTH.COM CLEC, LLC - CA 730   2016-07-21   
951-421 9 Moreno CA   6529 T-MOBILE USA, INC. 730   2015-11-07   

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

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