Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 562 [Rate centres in NPA 562] [Dial plan for NPA 562]

NXX: 503

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
562-503 A Norwalk CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730      
562-503 0 Norwalk CA   6529 T-MOBILE USA, INC. 730   2019-08-09   
562-503 1 Norwalk CA   899D METROPCS NETWORKS, LLC 730   2018-11-04   
562-503 2 Norwalk CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2019-08-05   
562-503 3 Norwalk CA   899D METROPCS NETWORKS, LLC 730   2019-02-04   
562-503 4 Norwalk CA   649C ONVOY, LLC - CA 730   2019-03-31   
562-503 5 Norwalk CA   6529 T-MOBILE USA, INC. 730   2019-03-22   
562-503 6 Norwalk CA   6529 T-MOBILE USA, INC. 730   2019-03-22   
562-503 7 Norwalk CA   6529 T-MOBILE USA, INC. 730   2018-12-06   
562-503 8 Norwalk CA   6529 T-MOBILE USA, INC. 730   2018-12-06   
562-503 9 Norwalk CA   6529 T-MOBILE USA, INC. 730   2018-10-23   

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

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