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: 543

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-543 A Joppa IL JOPPILXERS2  1015 FRONTIER NORTH, INC. - IL 362      
618-543 0 Joppa IL   073H TELNYX LLC 362   2020-07-11   
618-543 1 Joppa IL   495J STRATUS NETWORKS 362   2020-10-14   
618-543 2 Joppa IL   9915 DELTA COMMS, LLC DBA CLEARWAVE COMMUNICATIONS - IL 362   2003-02-03   
618-543 3 Joppa IL   1015 FRONTIER NORTH, INC. - IL 362      
618-543 4 Joppa IL   224C ONVOY, LLC 362   2019-09-07   
618-543 5 Joppa IL   224C ONVOY, LLC 362   2018-10-01   
618-543 6 Joppa IL   1015 FRONTIER NORTH, INC. - IL 362      
618-543 7 Joppa IL   1015 FRONTIER NORTH, INC. - IL 362      
618-543 8 Joppa IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 362   2020-06-03   
618-543 9 Joppa IL   1015 FRONTIER NORTH, INC. - IL 362      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.