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: DYVLIAXODS0

Remotes:

Switch Switch name Switch type
CLBGIAXPRS0  COLESBURG  GTR 
EPWOIAXORS0  EPWORTH  GTR 
ERVLIAXPRS0  EARLVILLE  GTR 
FRLYIAXORS0  FARLEY  GTR 
HLCRIAXPRS0  HOLY CROSS  GTL 
LXBGIAXORS0  LUXEMBURG  GTL 
NWVNIAXPRS0  NEW VIENNA  GTL 
WOTNIAXPRS0  WORTHINGTON  GTL 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
563-875 A Dyersville IA 1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 634      

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

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