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: 433

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
779-433 A Dixon IL   984E BANDWIDTH.COM CLEC, LLC - IL 364   2025-11-02   
779-433 0 Dixon IL   984E BANDWIDTH.COM CLEC, LLC - IL 364   2025-11-02   

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.