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: 612 [Rate centres in NPA 612] [Dial plan for NPA 612]

NXX: 665

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
612-665 A Twin Cities MN   490J DISH WIRELESS, LLC 628   2025-10-05   
612-665 0 Twin Cities MN   490J DISH WIRELESS, LLC 628   2025-10-06   
612-665 1 Twin Cities MN   490J DISH WIRELESS, LLC 628   2025-11-10   
612-665 2 Twin Cities MN   490J DISH WIRELESS, LLC 628   2025-12-17   

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.