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: 298

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-298 A Cypress CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
657-298 0 Cypress CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2019-04-20   
657-298 1 Cypress CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2016-02-25   
657-298 2 Cypress CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2016-02-25   
657-298 3 Cypress CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2016-02-27   
657-298 4 Cypress CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2016-02-24   
657-298 5 Cypress CA LNBHCAXPXQX  981E BANDWIDTH.COM CLEC, LLC - CA 730   2022-08-21   
657-298 6 Cypress CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2016-12-04   
657-298 7 Cypress CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-09-06   
657-298 8 Cypress CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2016-02-24   
657-298 9 Cypress CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2016-04-22   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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