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: RDFLMNRARS6

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
507-637 A Redwood Falls MN 9631 QWEST CORPORATION 620      
507-637 2 Redwood Falls MN 9631 QWEST CORPORATION 620      
507-637 3 Redwood Falls MN 9631 QWEST CORPORATION 620      
507-637 4 Redwood Falls MN 9631 QWEST CORPORATION 620      
507-637 5 Redwood Falls MN 9631 QWEST CORPORATION 620      
507-637 6 Redwood Falls MN 9631 QWEST CORPORATION 620      
507-637 8 Redwood Falls MN 9631 QWEST CORPORATION 620      
507-637 9 Redwood Falls MN 9631 QWEST CORPORATION 620      
507-697 A Morton MN 9631 QWEST CORPORATION 620      
507-697 6 Morton MN 9631 QWEST CORPORATION 620      
507-697 9 Morton MN 9631 QWEST CORPORATION 620      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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