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: 855

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
779-855 A Forrest (Livingston) IL BLTNILTS7MD  145J TERRA NOVA TELECOM INC. 366      
779-855 5 Forrest (Livingston) IL   145J TERRA NOVA TELECOM INC. 366   2021-05-29   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.