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: 931

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
779-931 A Sandwich IL SNDWILXAPS0  1015 FRONTIER NORTH, INC. - IL 358      
779-931 0 Sandwich IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2022-09-16   
779-931 1 Sandwich IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2024-04-28   
779-931 2 Sandwich IL   5562 METROPCS, INC. 358   2025-03-30   
779-931 3 Sandwich IL   5562 METROPCS, INC. 358   2025-03-30   
779-931 4 Sandwich IL   5562 METROPCS, INC. 358   2025-03-30   
779-931 8 Sandwich IL CHCGIL24DS6  224C ONVOY, LLC 358   2024-05-11   
779-931 9 Sandwich IL SNDWILXAPS0  1015 FRONTIER NORTH, INC. - IL 358   2016-12-26   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.