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: 347

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-347 A Anaheim CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      
657-347 0 Anaheim CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2021-06-11   
657-347 1 Anaheim CA   576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2018-01-06   
657-347 2 Anaheim CA   6529 T-MOBILE USA, INC. 730   2018-10-29   
657-347 3 Anaheim CA   073H TELNYX LLC 730   2017-03-24   
657-347 4 Anaheim CA   6529 T-MOBILE USA, INC. 730   2017-02-09   
657-347 5 Anaheim CA   6529 T-MOBILE USA, INC. 730   2018-10-29   
657-347 6 Anaheim CA   6529 T-MOBILE USA, INC. 730   2019-02-24   
657-347 7 Anaheim CA   6529 T-MOBILE USA, INC. 730   2016-12-10   
657-347 8 Anaheim CA   6529 T-MOBILE USA, INC. 730   2016-12-10   
657-347 9 Anaheim CA   6529 T-MOBILE USA, INC. 730   2016-12-10   

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

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