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: 618 [Rate centres in NPA 618] [Dial plan for NPA 618]

NXX: 312

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-312 A Salem IL CENLILCEOMD  772H WABASH INDEPENDENT NETWORKS, INC DBA WABASH COMM 520      
618-312 0 Salem IL STLSMOGZ6MD  073H TELNYX LLC 520   2018-07-19   
618-312 1 Salem IL COVLILCQXIX  984E BANDWIDTH.COM CLEC, LLC - IL 520   2019-02-28   
618-312 2 Salem IL STLSMOWQDS2  224C ONVOY, LLC 520   2021-04-24   
618-312 3 Salem IL STLSMOWQDS2  224C ONVOY, LLC 520   2021-04-24   
618-312 5 Salem IL CENLILCEOMD  772H WABASH INDEPENDENT NETWORKS, INC DBA WABASH COMM 520   2017-11-19   
618-312 6 Salem IL STLSMOWQDS2  224C ONVOY, LLC 520   2021-08-12   
618-312 7 Salem IL STLSMOWQDS2  224C ONVOY, LLC 520   2021-08-12   
618-312 8 Salem IL STLSMOWQ8MD  073H TELNYX LLC 520   2023-03-25   
618-312 9 Salem IL STLSMOWQDS2  224C ONVOY, LLC 520   2024-03-03   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.