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: CNCYIAXODS0

Remotes:

Switch Switch name Switch type
BRNDIAXORS1  BRANDON  RS 
DELHIAXORS0  DELHI  DSF 
GRELIAXORS0  GREELEY  1RC 
HPTNIAXORS0  HOPKINTON  1RE 
RWLYIAXORS9  ROWLEY  1RC 
RYANIAXORS0  RYAN  1RC 
TRMLIAXORS0  TROY MILLS  1RC 
WLKRIAXORS0  WALKER  1RE 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
319-438 A Central City IA 1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 635      
319-438 0 Central City IA 1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 635      
319-438 1 Central City IA 1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 635      
319-438 6 Central City IA 1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 635      
319-438 8 Central City IA 1167 WINDSTREAM IOWA COMMUNICATIONS, INC. - NORTH 635      

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

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