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

NXX: 530

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-530 A Pease MN STCDMNTOX3X  184D ONVOY, LLC - MN 626      
320-530 0 Pease MN STCDMNTOX3X  184D ONVOY, LLC - MN 626   2017-05-13   
320-530 8 Pease MN STCDMNTOX3X  184D ONVOY, LLC - MN 626   2019-02-25   
320-530 9 Pease MN STCDMNTOX3X  184D ONVOY, LLC - MN 626   2019-02-25   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.