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.

O'Brien, OR

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
541-596 A OBRNORXXRS1  3401 CITIZENS TELECOMM CO OF OR DBA FRONTIER COMM OF OR 670      
541-596 0   3401 CITIZENS TELECOMM CO OF OR DBA FRONTIER COMM OF OR 670      
541-596 2   3401 CITIZENS TELECOMM CO OF OR DBA FRONTIER COMM OF OR 670      
541-596 4   750E ONVOY, LLC - OR 670   2019-09-21   
541-596 5   826H INTEGRATED PATH COMMUNICATIONS-OREGON, LLC - OR 670   2018-08-07   
541-596 6   750E ONVOY, LLC - OR 670   2019-09-21   
541-596 7   7575 CENTURYLINK COMMUNICATIONS LLC 670   2014-09-18   
541-596 8   3401 CITIZENS TELECOMM CO OF OR DBA FRONTIER COMM OF OR 670      
541-596 9   750E ONVOY, LLC - OR 670   2015-03-19   

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.