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: 530

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-530 A Brea CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
657-530 0 Brea CA   516J TON80 COMMUNICATIONS, LLC 730   2022-04-11   
657-530 1 Brea CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2022-09-07   
657-530 2 Brea CA   649C ONVOY, LLC - CA 730   2021-12-13   
657-530 3 Brea CA   649C ONVOY, LLC - CA 730   2021-12-13   
657-530 4 Brea CA   649C ONVOY, LLC - CA 730   2021-12-13   
657-530 5 Brea CA   649C ONVOY, LLC - CA 730   2022-08-25   
657-530 6 Brea CA   649C ONVOY, LLC - CA 730   2022-08-25   
657-530 7 Brea CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2021-12-19   
657-530 8 Brea CA   6529 T-MOBILE USA, INC. 730   2021-12-16   
657-530 9 Brea CA   6010 NEW CINGULAR WIRELESS PCS, LLC 730   2021-12-10   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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