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: 299

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
530-299 A Adin CA ADINCAXFRS0  2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 724      
530-299 0 Adin CA   2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 724      
530-299 3 Adin CA   2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 724      
530-299 4 Adin CA   145J TERRA NOVA TELECOM INC. 724   2025-05-15   
530-299 7 Adin CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 724   2017-08-24   
530-299 8 Adin CA   145J TERRA NOVA TELECOM INC. 724   2026-01-04   
530-299 9 Adin CA   2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 724      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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