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.

Switch: DWSNMNABRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
320-312 A Dawson MN 2836 FARMERS MUTUAL TELEPHONE COMPANY - MN 626      
320-456 6 Raymond MN 2836 FARMERS MUTUAL TELEPHONE COMPANY - MN 626   2024-03-10   
320-899 6 Pennock MN 2836 FARMERS MUTUAL TELEPHONE COMPANY - MN 626   2024-03-10   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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