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: CHYNWYRFDS0

<< 1 2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
435-292 1 Coalville UT 021J AIRUS, INC. - UT 660   2019-05-23   

<< 1 2

Last updated: Sun, 17 May 2026 03:26:51 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.