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.

Castleton, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
309-479 A CSTNILXDRS0  1015 FRONTIER NORTH, INC. - IL 368      
309-479 0 PEORILPJDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 368      
309-479 2 CSTNILXDRS0  1015 FRONTIER NORTH, INC. - IL 368      
309-479 4 PEORILPJXYX  224C ONVOY, LLC 368      
309-479 5 KEWNILXDFMD  624H ONVOY SPECTRUM, LLC 368      
309-480 A PEORILTCDS0  5800 ITV-3, LLC D/B/A I3 BROADBAND 368      
309-480 0 PEORILTCDS0  5800 ITV-3, LLC D/B/A I3 BROADBAND 368      
309-480 1 PEORILPJXYX  224C ONVOY, LLC 368      
309-480 4 PEORILPJXYX  224C ONVOY, LLC 368      
309-480 7 PEORILPJX1Z  508J CENTURYLINK COMMUNICATIONS, LLC 368      
309-480 8 PEORILPJXRZ  495J STRATUS NETWORKS 368      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.