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: 525

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-525 A Garrison MN STCDMNTOX3X  184D ONVOY, LLC - MN 626      
320-525 0 Garrison MN STCDMNTOX3X  184D ONVOY, LLC - MN 626   2016-05-06   
320-525 1 Garrison MN STCDMNTOXTX  073H TELNYX LLC 626   2020-07-19   
320-525 2 Garrison MN STCDMNTOX0X  5256 LEVEL 3 COMMUNICATIONS, LLC - MN 626   2012-05-24   
320-525 3 Garrison MN STCDMNTOX3X  184D ONVOY, LLC - MN 626   2006-07-14   
320-525 4 Garrison MN STCDMNTOX3X  184D ONVOY, LLC - MN 626   2019-10-28   
320-525 5 Garrison MN STCDMNTOX3X  184D ONVOY, LLC - MN 626   2020-01-30   
320-525 6 Garrison MN STCDMNTOX3X  184D ONVOY, LLC - MN 626   2021-03-10   
320-525 7 Garrison MN STCDMNTOXHX  508J CENTURYLINK COMMUNICATIONS, LLC 626   2017-06-20   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.