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: 303

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-303 A Glenwood MN STCDMNATUMD  4587 CONSOLIDATED COMMUNICATIONS ENTERPRISE SVCS-MN 626      
320-303 0 Glenwood MN   4587 CONSOLIDATED COMMUNICATIONS ENTERPRISE SVCS-MN 626      
320-303 1 Glenwood MN   4587 CONSOLIDATED COMMUNICATIONS ENTERPRISE SVCS-MN 626      
320-303 2 Glenwood MN   624H ONVOY SPECTRUM, LLC 626   2024-12-19   
320-303 8 Glenwood MN   5816 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 626   2023-07-28   
320-303 9 Glenwood MN   4587 CONSOLIDATED COMMUNICATIONS ENTERPRISE SVCS-MN 626      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.