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-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
507-347 A Holland MN HLLDMNXHRS3  620      
507-658 A Ruthton MN RTTNMNXRDS1  620      
507-746 A Garvin MN GRVNMNXGRS7  620      
507-777 A Woodstock MN WDSTMNXWRS7  620      
507-823 A Russell MN RSSLMNXARS8  620      

Last updated: Sat, 10 Oct 2020 02:22:41 UTC

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