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.
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NPA: 530 [Rate centres in NPA 530] [Dial plan for NPA 530]

NXX: 256

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
530-256 A Westwood CA WSWDCAXFDS0  3402 CITIZENS TELECOMM DBA FRONTIER COMM GOLDEN STATE 724      
530-256 0 Westwood CA WSWDCAXFDS0  3402 CITIZENS TELECOMM DBA FRONTIER COMM GOLDEN STATE 724      
530-256 1 Westwood CA WSWDCAXFDS0  3402 CITIZENS TELECOMM DBA FRONTIER COMM GOLDEN STATE 724   2010-04-12   
530-256 2 Westwood CA WSWDCAXFDS0  3402 CITIZENS TELECOMM DBA FRONTIER COMM GOLDEN STATE 724      
530-256 3 Westwood CA WSWDCAXFDS0  3402 CITIZENS TELECOMM DBA FRONTIER COMM GOLDEN STATE 724      
530-256 7 Westwood CA CHICCA01X5X  508J CENTURYLINK COMMUNICATIONS, LLC 724   2017-08-24   

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

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