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.

Compton, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
815-497 A CMTNILXARS0  1015 FRONTIER NORTH, INC. - IL 368      
815-497 1   1015 FRONTIER NORTH, INC. - IL 368      
815-497 2   1015 FRONTIER NORTH, INC. - IL 368      
815-497 3   145J TERRA NOVA TELECOM INC. 368   2025-05-31   
815-497 4   224C ONVOY, LLC 368   2024-12-30   
815-497 5   495J STRATUS NETWORKS 368   2020-08-02   
815-497 6   624H ONVOY SPECTRUM, LLC 368   2024-12-02   
815-497 7   508J CENTURYLINK COMMUNICATIONS, LLC 368   2016-08-02   
815-497 9   1015 FRONTIER NORTH, INC. - IL 368      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.