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.

Switch: RCFRILRTTMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
779-770 A Rockford IL 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 360      
779-771 A Rockford IL 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 360      
779-772 A Rockford IL 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 360      
815-713 A Rockford IL 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 360      
815-904 A Rockford IL 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 360      
815-975 A Belvidere IL 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 360      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.