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: DYVLIAXOPS0

Remotes:

Switch Switch name Switch type
CLBGIAXPRP0    RP 
EPWOIAXORP0    RP 
ERVLIAXPRP0    RP 
FRLYIAXORP0    RP 
HLCRIAXPRP0    RP 
LXBGIAXORP0    RP 
NWVNIAXPRP0    RP 
WOTNIAXPRP0    RP 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
563-230 A Dyersville IA 1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 634      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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