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: 956

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
618-956 A Carterville IL HRBGILCBDS0  9915 DELTA COMMS, LLC DBA CLEARWAVE COMMUNICATIONS - IL 362      
618-956 0 Carterville IL CRDLILABSMD  6529 T-MOBILE USA, INC. 362   2024-01-13   
618-956 1 Carterville IL CRDLILABSMD  6529 T-MOBILE USA, INC. 362   2024-01-13   
618-956 7 Carterville IL CRDLILXE00Z  490J DISH WIRELESS, LLC 362   2023-06-26   
618-956 9 Carterville IL HRBGILCBDS0  9915 DELTA COMMS, LLC DBA CLEARWAVE COMMUNICATIONS - IL 362      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.