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: 861 [Rate centres in NPA 861] [Dial plan for NPA 861]

NXX: 777

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
861-777 A Rock Island IL   114J EXIANT COMMUNICATIONS LLC 634   2026-10-31   
861-777 7 Rock Island IL   114J EXIANT COMMUNICATIONS LLC 634   2026-10-31   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.