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: 867

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-867 A St Cloud MN STCDMNAT0MD  939H COMMIO, LLC 626      
320-867 5 St Cloud MN STCDMNAT0MD  939H COMMIO, LLC 626   2023-06-03   
320-867 8 St Cloud MN   5816 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN 626   2026-04-30   

Last updated: Sun, 17 May 2026 03:26:51 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.