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: 779 [Rate centres in NPA 779] [Dial plan for NPA 779]

NXX: 577

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
779-577 A Rockford IL RCFRILRTXFY  622J SKYE TELECOM LLC DBA SKYETEL 360      
779-577 0 Rockford IL   6265 UNITED STATES CELLULAR - IL 360      
779-577 1 Rockford IL   6265 UNITED STATES CELLULAR - IL 360      
779-577 7 Rockford IL RCFRILRTXFY  622J SKYE TELECOM LLC DBA SKYETEL 360      
779-577 8 Rockford IL   6265 UNITED STATES CELLULAR - IL 360      
779-577 9 Rockford IL   6265 UNITED STATES CELLULAR - IL 360      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.