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: MRFDWIXADS0

Remotes:

Switch Switch name Switch type
CLBYWIXARS0  COLBY  GTR 
LOYLWIXARS0  LOYAL  GTR 
OWENWIXARS0  OWEN  GTR 
SPNCWIXARS2  SPENCER  GTR 
SRFRWIXARS0  STRATFORD  GTR 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
715-221 A Marshfield WI 0886 FRONTIER NORTH INC. - WI 350      
715-384 A Marshfield WI 0886 FRONTIER NORTH INC. - WI 350      
715-387 A Marshfield WI 0886 FRONTIER NORTH INC. - WI 350      
715-389 A Marshfield WI 0886 FRONTIER NORTH INC. - WI 350      
715-486 A Marshfield WI 0886 FRONTIER NORTH INC. - WI 350      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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