Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Westwood, CA

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
530-256 A WSWDCAXFDS0  3402 CITIZENS TELECOMM DBA FRONTIER COMM GOLDEN STATE 724      
530-256 0   3402 CITIZENS TELECOMM DBA FRONTIER COMM GOLDEN STATE 724      
530-256 1   3402 CITIZENS TELECOMM DBA FRONTIER COMM GOLDEN STATE 724   2010-04-12   
530-256 2   3402 CITIZENS TELECOMM DBA FRONTIER COMM GOLDEN STATE 724      
530-256 3   3402 CITIZENS TELECOMM DBA FRONTIER COMM GOLDEN STATE 724      
530-256 7   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 724   2017-08-24   
530-375 A CHICCACWCM1  6010 NEW CINGULAR WIRELESS PCS, LLC 724      
530-375 0   6010 NEW CINGULAR WIRELESS PCS, LLC 724      
530-375 6   145J TERRA NOVA TELECOM INC. 724   2025-05-16   
530-375 7   6010 NEW CINGULAR WIRELESS PCS, LLC 724      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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