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.

OCN: 645H AIRUS, INC. - DC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
202-852 A Washington Zone 1 DC WASHDCRKBMD  236      
202-852 1 Washington Zone 1 DC WASHDCRKBMD  236   2015-07-23   
202-926 A Washington Zone 1 DC WASHDCRKBMD  236      
202-926 1 Washington Zone 1 DC WASHDCRKBMD  236   2019-11-29   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.