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: 404

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
779-404 A Rochelle IL DIXNILXA4MD  224C ONVOY, LLC 364   2024-08-29   
779-404 0 Rochelle IL DIXNILXA4MD  224C ONVOY, LLC 364   2024-08-29   
779-404 5 Rochelle IL DKLBILRSDMD  5562 METROPCS, INC. 364   2026-06-20   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.