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: OSSEMNXODMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
320-331 A Brownton MN 593K MCC TELEPHONY LLC 628      
320-331 1 Brownton MN 593K MCC TELEPHONY LLC 628   2010-05-15   
320-389 A Buffalo Lake MN 593K MCC TELEPHONY LLC 628      
320-389 9 Buffalo Lake MN 593K MCC TELEPHONY LLC 628   2010-07-11   
320-446 A Stewart MN 593K MCC TELEPHONY LLC 628      
320-446 6 Stewart MN 593K MCC TELEPHONY LLC 628   2010-07-11   
320-490 7 Howard Lake MN 593K MCC TELEPHONY LLC 628   2010-05-15   
320-613 A Lester Prairie MN 593K MCC TELEPHONY LLC 628      
320-613 6 Lester Prairie MN 593K MCC TELEPHONY LLC 628   2010-07-11   
320-626 2 Dassel MN 593K MCC TELEPHONY LLC 628   2010-05-15   
320-753 A Silver Lake MN 593K MCC TELEPHONY LLC 628      
320-753 6 Silver Lake MN 593K MCC TELEPHONY LLC 628   2010-07-11   
952-373 9 Norwood MN 593K MCC TELEPHONY LLC 628   2010-05-15   

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

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