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: 320 [Rate centres in NPA 320] [Dial plan for NPA 320]

NXX: 559

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-559 A Cokato MN BFLOMNAE2MD  792K CHARTER IP ENABLED SERVICES, LLC 628   2025-02-18   
320-559 0 Cokato MN BFLOMNAE2MD  792K CHARTER IP ENABLED SERVICES, LLC 628   2006-10-26   
320-559 3 Cokato MN MPLSMNCDDSC  184D ONVOY, LLC - MN 628   2019-06-21   
320-559 5 Cokato MN MPLSMNCDDSC  184D ONVOY, LLC - MN 628   2019-06-21   
320-559 6 Cokato MN STPLMNMKTMD  624H ONVOY SPECTRUM, LLC 628   2021-10-30   
320-559 7 Cokato MN STPLMNMKTMD  624H ONVOY SPECTRUM, LLC 628   2021-10-30   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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