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: 847 [Rate centres in NPA 847] [Dial plan for NPA 847]

NXX: 944

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
847-944 A Schaumburg IL SCBGILCODS0  9329 ILLINOIS BELL TEL CO 358      
847-944 0 Schaumburg IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2005-05-06   
847-944 1 Schaumburg IL   460K FIRST COMMUNICATIONS, LLC 358   2004-07-23   
847-944 2 Schaumburg IL   9329 ILLINOIS BELL TEL CO 358      
847-944 3 Schaumburg IL   9329 ILLINOIS BELL TEL CO 358      
847-944 4 Schaumburg IL   9329 ILLINOIS BELL TEL CO 358      
847-944 5 Schaumburg IL   9329 ILLINOIS BELL TEL CO 358      
847-944 6 Schaumburg IL   9329 ILLINOIS BELL TEL CO 358      
847-944 7 Schaumburg IL   9329 ILLINOIS BELL TEL CO 358      
847-944 8 Schaumburg IL   829J PAETEC ITEL, LLC 358   2006-06-09   
847-944 9 Schaumburg IL   460K FIRST COMMUNICATIONS, LLC 358   2001-10-18   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.