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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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

NXX: 281

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
530-281 A Keddie CA KEDDCAXFRS0  2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 724      
530-281 0 Keddie CA KEDDCAXFRS0  2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 724      
530-281 6 Keddie CA KEDDCAXFRS0  2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 724      
530-281 7 Keddie CA CHICCA01X5X  508J CENTURYLINK COMMUNICATIONS, LLC 724   2017-08-23   
530-281 9 Keddie CA KEDDCAXFRS0  2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 724      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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