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: MPLTMNFJDS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
612-353 A Twin Cities MN 2557 XO MINNESOTA, LLC 628      
612-353 0 Twin Cities MN 2557 XO MINNESOTA, LLC 628   2005-06-10   
612-353 2 Twin Cities MN 2557 XO MINNESOTA, LLC 628   2006-10-09   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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