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.

Chatsworth, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
779-308 A BLTNILTSYMD  495J STRATUS NETWORKS 366      
779-308 0 BLTNILXDX1Y  073H TELNYX LLC 366      
779-308 1 BLTNILTSYMD  495J STRATUS NETWORKS 366      
779-308 3 BLTNILXDXHY  624H ONVOY SPECTRUM, LLC 366      
815-635 A CHWOILXARS0  1015 FRONTIER NORTH, INC. - IL 366      
815-635 0 BLTNILXDX0X  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 366      
815-635 1 CHWOILXARS0  1015 FRONTIER NORTH, INC. - IL 366      
815-635 3 CHWOILXARS0  1015 FRONTIER NORTH, INC. - IL 366      
815-635 4 CHWOILXARS0  1015 FRONTIER NORTH, INC. - IL 366      
815-635 5 BLTNILXDXPX  846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 366      
815-635 6 BLTNILXDXMX  224C ONVOY, LLC 366      
815-635 7 BLTNILXDXZX  508J CENTURYLINK COMMUNICATIONS, LLC 366      
815-635 8 BLTNILXDXMX  224C ONVOY, LLC 366      
815-635 9 BLTNILXDXMX  224C ONVOY, LLC 366      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.