Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 424 [Rate centres in NPA 424] [Dial plan for NPA 424]

NXX: 420

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-420 A Inglewood CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
424-420 0 Inglewood CA   965H FRACTEL, LLC 730   2019-07-16   
424-420 1 Inglewood CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2019-07-17   
424-420 2 Inglewood CA   6529 T-MOBILE USA, INC. 730   2019-07-11   
424-420 3 Inglewood CA   6529 T-MOBILE USA, INC. 730   2019-08-30   
424-420 4 Inglewood CA   965H FRACTEL, LLC 730   2019-07-16   
424-420 5 Inglewood CA   6529 T-MOBILE USA, INC. 730   2019-08-30   
424-420 6 Inglewood CA   6529 T-MOBILE USA, INC. 730   2019-05-12   
424-420 7 Inglewood CA   6529 T-MOBILE USA, INC. 730   2019-05-12   
424-420 8 Inglewood CA   6529 T-MOBILE USA, INC. 730   2019-05-12   
424-420 9 Inglewood CA   6529 T-MOBILE USA, INC. 730   2019-03-31   

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

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