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.

NPA: 815 [Rate centres in NPA 815] [Dial plan for NPA 815]

NXX: 406

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-406 A Byron IL BYRNILXADS0  1015 FRONTIER NORTH, INC. - IL 360      
815-406 0 Byron IL RCFRILRTZMD  224C ONVOY, LLC 360   2019-09-06   
815-406 1 Byron IL RCFRILRTPMD  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 360   2019-04-22   
815-406 2 Byron IL RCFRILRTX3Y  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 360      
815-406 3 Byron IL RCFRILRTX3Y  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 360      
815-406 4 Byron IL RCFRILRTX3Y  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 360      
815-406 5 Byron IL RCFRILRTX4Y  318J COMCAST IP PHONE, LLC 360   2006-08-11   
815-406 6 Byron IL RCFRILRTZMD  224C ONVOY, LLC 360   2018-07-30   
815-406 8 Byron IL RCFRILRTX4Y  318J COMCAST IP PHONE, LLC 360   2007-09-23   
815-406 9 Byron IL RCFRILRTZMD  224C ONVOY, LLC 360   2020-05-21   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.