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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Switch: FRMLCAXFDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
530-336 A Fall River Mills CA 2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 724      
530-336 0 Fall River Mills CA 2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 724      
530-336 3 Fall River Mills CA 2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 724      
530-336 5 Fall River Mills CA 2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 724      
530-336 6 Fall River Mills CA 2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 724      
530-336 7 Fall River Mills CA 2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 724      
530-336 9 Fall River Mills CA 2308 CITIZENS TELECOM CA. DBA FRONTIER COM OF CA 724      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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