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: SRBLIAXODS0

Remotes:

Switch Switch name Switch type
ALTAIA01RS0  ALTA  RS 
ANTHIAABRS0  ANTHON  RS 
CNRPIA01RS0  COON RAPIDS  DRL 
DNBRIAAARS0  DANBURY  DRL 
HOLSIAAERS0  HOLSTEIN  RS 
HWRDIAADRS0  HAWARDEN  DRL 
IDGVIACORS0  IDA GROVE  RS 
JFSNSDXARS0  JEFFERSON  RLC 
LRNSIA01RL0  LAURENS  RLC 
MPTNIAAFRS0  MAPLETON  DRL 
MRHDIAAARS0  MOORHEAD  DRL 
NSCYSDAPRS0  NORTH SIOUX CITY  DRL 
ONAWIA01RS0  ONAWA  RLC 
ORCYIA01RL0  ORANGE CITY  RLC 
SALXIAXORS0  SALIX  RLC 
SLDRIAXORS0  SOLDIER  RLC 
SLONIAXORS0  SLOAN  DRL 
SXCYIAEORL0  SIOUX CITY  RLC 
VRMLSDACRS0  VERMILLION  DRL 
WHNGIAACRL0  WHITING  RLC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
712-228 A Sergeant Bluff IA 1260 NORTHWEST IOWA TELEPHONE, LLC 630      
712-237 A Sergeant Bluff IA 1260 NORTHWEST IOWA TELEPHONE, LLC 630      
712-247 A Sergeant Bluff IA 1260 NORTHWEST IOWA TELEPHONE, LLC 630      
712-257 A Sergeant Bluff IA 1260 NORTHWEST IOWA TELEPHONE, LLC 630      
712-271 A Sergeant Bluff IA 1260 NORTHWEST IOWA TELEPHONE, LLC 630      
712-285 A Sergeant Bluff IA 1260 NORTHWEST IOWA TELEPHONE, LLC 630      
712-923 A Sergeant Bluff IA 1260 NORTHWEST IOWA TELEPHONE, LLC 630      
712-924 A Sergeant Bluff IA 1260 NORTHWEST IOWA TELEPHONE, LLC 630      
712-934 A Sergeant Bluff IA 1260 NORTHWEST IOWA TELEPHONE, LLC 630      
712-942 A Sergeant Bluff IA 1260 NORTHWEST IOWA TELEPHONE, LLC 630      
712-943 A Sergeant Bluff IA 1260 NORTHWEST IOWA TELEPHONE, LLC 630      

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

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