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: ESCDORXXDS0

Remotes:

Switch Switch name Switch type
ANTPORXARS0  ANTELOPE  1RC 
CRBTORXCRS0  CORBETT  RSC 
HANSORXARS0  HAINES  RSC 
MDSPORXXRS0  BAKER CITY  1RC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
503-337 A Estacada OR 2371 CASCADE UTILITIES, INC. 672      
503-630 A Estacada OR 2371 CASCADE UTILITIES, INC. 672      
503-637 A Estacada OR 2371 CASCADE UTILITIES, INC. 672      
503-834 A Estacada OR 2371 CASCADE UTILITIES, INC. 672      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.