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: 427

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-427 A Beardsley MN STCDMNTOX3X  184D ONVOY, LLC - MN 626      
320-427 1 Beardsley MN STCDMNTOX0X  5256 LEVEL 3 COMMUNICATIONS, LLC - MN 626   2023-02-25   
320-427 2 Beardsley MN STCDMNTOX3X  184D ONVOY, LLC - MN 626   2020-08-17   
320-427 3 Beardsley MN STCDMNTOX3X  184D ONVOY, LLC - MN 626   2020-03-05   
320-427 4 Beardsley MN STCDMNTOX3X  184D ONVOY, LLC - MN 626   2020-08-17   
320-427 5 Beardsley MN STCDMNTOXNX  624H ONVOY SPECTRUM, LLC 626   2021-07-16   
320-427 6 Beardsley MN STCDMNTOXNX  624H ONVOY SPECTRUM, LLC 626   2021-10-30   
320-427 7 Beardsley MN STCDMNTOX3X  184D ONVOY, LLC - MN 626   2021-03-11   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.