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: 578

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
951-578 A Arlington CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
951-578 0 Arlington CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2021-04-23   
951-578 1 Arlington CA   624H ONVOY SPECTRUM, LLC 730   2021-07-21   
951-578 2 Arlington CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2021-05-29   
951-578 3 Arlington CA   6529 T-MOBILE USA, INC. 730   2021-04-23   
951-578 4 Arlington CA   6529 T-MOBILE USA, INC. 730   2021-04-23   
951-578 5 Arlington CA   6529 T-MOBILE USA, INC. 730   2021-04-23   
951-578 6 Arlington CA   6529 T-MOBILE USA, INC. 730   2021-04-22   
951-578 7 Arlington CA   6529 T-MOBILE USA, INC. 730   2021-04-22   
951-578 8 Arlington CA   6529 T-MOBILE USA, INC. 730   2021-04-22   
951-578 9 Arlington CA   6529 T-MOBILE USA, INC. 730   2021-04-22   

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

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