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: 240

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-240 A Rock Cut IL   792K CHARTER IP ENABLED SERVICES, LLC 360   2025-01-16   
815-240 0 Rock Cut IL RCFRILRTZMD  224C ONVOY, LLC 360      
815-240 1 Rock Cut IL   792K CHARTER IP ENABLED SERVICES, LLC 360      
815-240 2 Rock Cut IL RCFRILRTZMD  224C ONVOY, LLC 360      
815-240 3 Rock Cut IL RCFRILRTZMD  224C ONVOY, LLC 360      
815-240 4 Rock Cut IL RCFRILRTX4Y  318J COMCAST IP PHONE, LLC 360      
815-240 5 Rock Cut IL RCFRILRTZMD  224C ONVOY, LLC 360      
815-240 6 Rock Cut IL RCFRILRCX3X  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 360      
815-240 8 Rock Cut IL RCFRILRTZMD  224C ONVOY, LLC 360      
815-240 9 Rock Cut IL RCFRILRTZMD  224C ONVOY, LLC 360      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.