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.

Trivoli, IL

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
309-362 A TRIVILTIRS0  9329 ILLINOIS BELL TEL CO 368      
309-362 0   224C ONVOY, LLC 368   2017-03-24   
309-362 1   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 368   2015-01-10   
309-362 2   9329 ILLINOIS BELL TEL CO 368      
309-362 3   224C ONVOY, LLC 368   2019-07-15   
309-362 4   224C ONVOY, LLC 368   2019-07-15   
309-362 5   508J CENTURYLINK COMMUNICATIONS, LLC 368   2016-08-06   
309-362 7   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 368   2004-07-17   
309-362 8   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 368   2015-11-02   
309-362 9   073H TELNYX LLC 368   2018-07-20   
309-704 A PEORILPJXRZ  495J STRATUS NETWORKS 368      
309-704 0   984E BANDWIDTH.COM CLEC, LLC - IL 368   2021-06-18   
309-704 1   495J STRATUS NETWORKS 368   2020-09-07   
309-704 2   224C ONVOY, LLC 368   2021-07-05   
309-704 4   224C ONVOY, LLC 368   2021-02-12   
309-704 7   224C ONVOY, LLC 368   2021-04-03   
309-704 8   516C AT&T CORP. 368   2023-10-02   
309-704 9   624H ONVOY SPECTRUM, LLC 368   2024-05-13   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.