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: 278

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-278 A Woodburn IL WDBNILXERS0  1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-278 0 Woodburn IL   1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-278 1 Woodburn IL   1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-278 2 Woodburn IL   984E BANDWIDTH.COM CLEC, LLC - IL 520   2022-04-27   
618-278 3 Woodburn IL   073H TELNYX LLC 520   2020-07-20   
618-278 4 Woodburn IL   1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      
618-278 5 Woodburn IL   224C ONVOY, LLC 520   2019-07-29   
618-278 6 Woodburn IL   224C ONVOY, LLC 520   2019-07-29   
618-278 7 Woodburn IL   224C ONVOY, LLC 520   2021-07-22   
618-278 8 Woodburn IL   224C ONVOY, LLC 520   2018-07-29   
618-278 9 Woodburn IL   1055 FRONTIER COMMUNICATIONS-MIDLAND, INC. 520      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.