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: 999

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-999 A Edwardsville IL STLSMOWQDS2  224C ONVOY, LLC 520      
618-999 0 Edwardsville IL STLSMOWQDS2  224C ONVOY, LLC 520   2015-07-27   
618-999 1 Edwardsville IL STLSMOWQDS2  224C ONVOY, LLC 520   2015-07-27   
618-999 2 Edwardsville IL STLSMOWQDS2  224C ONVOY, LLC 520   2015-07-27   
618-999 3 Edwardsville IL STLSMOWQDS2  224C ONVOY, LLC 520   2015-07-27   
618-999 4 Edwardsville IL STLSMOWQDS2  224C ONVOY, LLC 520   2015-07-27   
618-999 5 Edwardsville IL STLSMOWQDS2  224C ONVOY, LLC 520   2015-07-27   
618-999 6 Edwardsville IL STLSMOWQDS2  224C ONVOY, LLC 520   2015-07-27   
618-999 7 Edwardsville IL STLSMOWQDS2  224C ONVOY, LLC 520   2015-07-27   
618-999 8 Edwardsville IL STLSMOWQDS2  224C ONVOY, LLC 520   2015-05-01   
618-999 9 Edwardsville IL STLSMOWQDS2  224C ONVOY, LLC 520   2015-05-01   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.