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.

Baylis, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
217-336 A BYLSILXCRS0  1015 FRONTIER NORTH, INC. - IL 376      
217-336 0   224C ONVOY, LLC 376   2021-05-09   
217-336 1   224C ONVOY, LLC 376   2023-03-24   
217-336 2   224C ONVOY, LLC 376   2021-10-16   
217-336 3   224C ONVOY, LLC 376   2021-04-04   
217-336 4   1015 FRONTIER NORTH, INC. - IL 376      
217-336 5   224C ONVOY, LLC 376   2021-05-09   
217-336 6   224C ONVOY, LLC 376   2020-04-19   
217-336 7   224C ONVOY, LLC 376   2020-09-05   
217-336 8   224C ONVOY, LLC 376   2022-12-19   
217-336 9   224C ONVOY, LLC 376   2021-12-03   
447-268 A JCVLILXCDMD  224C ONVOY, LLC 376      
447-268 2   224C ONVOY, LLC 376   2023-11-04   
447-268 3   624H ONVOY SPECTRUM, LLC 376   2024-04-27   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.