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: 510

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-510 A St Elmo IL CENLILCEGMD  593K MCC TELEPHONY LLC 520      
618-510 0 St Elmo IL   145J TERRA NOVA TELECOM INC. 520   2025-07-06   
618-510 9 St Elmo IL COVLILCQXIX  984E BANDWIDTH.COM CLEC, LLC - IL 520   2020-04-13   

Last updated: Tue, 15 Jul 2025 18:46:49 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.