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: 671

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-671 A Brea CA LSANCAJW7MD  939H COMMIO, LLC 730      
657-671 0 Brea CA LSANCAJW7MD  939H COMMIO, LLC 730   2023-10-12   
657-671 1 Brea CA LSANCAJW7MD  939H COMMIO, LLC 730   2023-10-12   
657-671 2 Brea CA LSANCAJW7MD  939H COMMIO, LLC 730   2023-10-12   
657-671 3 Brea CA LSANCAJW7MD  939H COMMIO, LLC 730   2023-10-12   
657-671 4 Brea CA LSANCAJW7MD  939H COMMIO, LLC 730   2023-10-12   
657-671 5 Brea CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2023-10-20   
657-671 6 Brea CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2023-10-20   
657-671 7 Brea CA   6529 T-MOBILE USA, INC. 730   2024-01-22   
657-671 8 Brea CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2023-10-28   
657-671 9 Brea CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2023-12-21   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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