Local Calling Guide

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NPA: 657 [Rate centres in NPA 657] [Dial plan for NPA 657]

NXX: 291

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-291 A Orange CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
657-291 0 Orange CA   515J IP HORIZON LLC 730   2015-11-07   
657-291 1 Orange CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2016-08-18   
657-291 2 Orange CA   793K TWC IP ENABLED SERVICES, LLC 730   2016-02-08   
657-291 3 Orange CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-10-27   
657-291 4 Orange CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-10-26   
657-291 5 Orange CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-10-26   
657-291 6 Orange CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-10-26   
657-291 7 Orange CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2016-08-18   
657-291 8 Orange CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2016-08-18   
657-291 9 Orange CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-10-26   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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