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: MONDMNXADS0

Remotes:

Switch Switch name Switch type
DELNMNXDRS9  DELANO  RSC 
MAYRMNXMRS6  MAYER  1RC 
MPPLMNXMRS4  MAPLE PLAIN  RSC 
NWGRMNXNRS3  NEW GERMANY  RLC 
STBNMNXSRS4  ST BONIFACIUS  RSC 
WTTWMNXWRS9  WATERTOWN  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
952-472 A Twin Cities MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 628      
952-491 A Twin Cities MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 628      
952-495 A Twin Cities MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 628      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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