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: 499

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
320-499 A Brandon MN STCDMNTOX4Y  965H FRACTEL, LLC 626      
320-499 4 Brandon MN   145J TERRA NOVA TELECOM INC. 626   2025-06-06   
320-499 9 Brandon MN   965H FRACTEL, LLC 626   2020-12-12   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.