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: 461

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-461 A St Elmo IL CENLILCEGMD  593K MCC TELEPHONY LLC 520      
618-461 0 St Elmo IL STLSMOWQ8MD  073H TELNYX LLC 520   2020-07-20   
618-461 1 St Elmo IL CENLILCEGMD  593K MCC TELEPHONY LLC 520   2010-06-18   
618-461 4 St Elmo IL STLSMOWQDS2  224C ONVOY, LLC 520   2018-07-29   
618-461 5 St Elmo IL STLSMOWQDS2  224C ONVOY, LLC 520   2019-07-29   
618-461 6 St Elmo IL STLSMOWQDS2  224C ONVOY, LLC 520   2019-07-29   
618-461 7 St Elmo IL COVLILCQXEX  508J CENTURYLINK COMMUNICATIONS, LLC 520   2016-01-23   
618-461 8 St Elmo IL COVLILCQXMX  495J STRATUS NETWORKS 520   2020-11-22   
618-461 9 St Elmo IL STLSMO05XMX  624H ONVOY SPECTRUM, LLC 520   2025-01-04   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.