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.

OCN: 1507 WINSTED TEL. CO.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
320-485 A Winsted MN WNSTMNXWRP0  628      
320-485 2 Winsted MN   628      
320-485 3 Winsted MN   628      
320-485 4 Winsted MN   628      
320-485 5 Winsted MN   628      
320-485 7 Winsted MN   628      
320-485 8 Winsted MN   628      

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

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