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: CLSPCOMAX3Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
719-318 A Colorado Springs-Main CO 515J IP HORIZON LLC 658      
719-679 1 Trinidad CO 515J IP HORIZON LLC 658   2024-07-12   
719-697 4 Monte Vista CO 515J IP HORIZON LLC 658   2024-07-12   
719-753 9 Fairplay CO 515J IP HORIZON LLC 658   2024-07-12   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.