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.

Seymour, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
217-687 A SYMRILXCRS1  1000 FRONTIER COMMUNICATIONS OF THE CAROLINAS, INC - IL 370      
217-687 0 CHMPILCPOMD  224C ONVOY, LLC 370   2019-07-05   
217-687 1 CHMPILCPOMD  224C ONVOY, LLC 370   2019-07-05   
217-687 2 SYMRILXCRS1  1000 FRONTIER COMMUNICATIONS OF THE CAROLINAS, INC - IL 370      
217-687 3 CHMPILCPXHX  593K MCC TELEPHONY LLC 370   2022-06-25   
217-687 4 SYMRILXCRS1  1000 FRONTIER COMMUNICATIONS OF THE CAROLINAS, INC - IL 370      
217-687 5 CHMPILCPXLY  490J DISH WIRELESS, LLC 370   2023-03-10   
217-687 7 CHMPILCPX0Y  073H TELNYX LLC 370   2020-07-20   
217-687 8 CHMPILCPOMD  224C ONVOY, LLC 370   2018-10-07   
217-687 9 CHMPILCPDS1  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 370   2015-10-30   
447-265 A CHMPILCPOMD  224C ONVOY, LLC 370      
447-265 0 CHMPILCPX5Y  624H ONVOY SPECTRUM, LLC 370   2024-05-18   
447-265 2 CHMPILCPOMD  224C ONVOY, LLC 370   2023-10-28   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.