Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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

NXX: 465

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-465 A Cypress CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
657-465 0 Cypress CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-06-12   
657-465 1 Cypress CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-06-12   
657-465 2 Cypress CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-06-12   
657-465 3 Cypress CA ANHMCA01DS3  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2015-04-23   
657-465 4 Cypress CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2015-06-12   
657-465 5 Cypress CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2015-08-11   
657-465 6 Cypress CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2015-08-28   
657-465 7 Cypress CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730   2015-08-28   
657-465 8 Cypress CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2018-11-17   
657-465 9 Cypress CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2015-12-10   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.