Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 657 [Rate centres in NPA 657] [Dial plan for NPA 657]

NXX: 456

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-456 A Anaheim CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
657-456 0 Anaheim CA   576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2015-04-27   
657-456 1 Anaheim CA   6529 T-MOBILE USA, INC. 730   2015-04-17   
657-456 2 Anaheim CA   6529 T-MOBILE USA, INC. 730   2015-04-17   
657-456 3 Anaheim CA   6529 T-MOBILE USA, INC. 730   2015-04-17   
657-456 4 Anaheim CA   6529 T-MOBILE USA, INC. 730   2015-04-17   
657-456 5 Anaheim CA   6529 T-MOBILE USA, INC. 730   2015-04-17   
657-456 6 Anaheim CA   6529 T-MOBILE USA, INC. 730   2015-04-17   
657-456 7 Anaheim CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2018-11-03   
657-456 8 Anaheim CA   6529 T-MOBILE USA, INC. 730   2015-04-17   
657-456 9 Anaheim CA   6529 T-MOBILE USA, INC. 730   2015-04-17   

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

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