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: 378

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
779-378 A McHenry IL CHCGIL24DS6  224C ONVOY, LLC 358      
779-378 0 McHenry IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
779-378 1 McHenry IL   939H COMMIO, LLC 358      
779-378 2 McHenry IL CHCGIL24DS6  224C ONVOY, LLC 358      
779-378 3 McHenry IL   224C ONVOY, LLC 358      
779-378 4 McHenry IL   224C ONVOY, LLC 358      
779-378 5 McHenry IL   224C ONVOY, LLC 358      
779-378 6 McHenry IL   624H ONVOY SPECTRUM, LLC 358      
779-378 7 McHenry IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
779-378 8 McHenry IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358      
779-378 9 McHenry IL CHCGILMF8MD  6529 T-MOBILE USA, INC. 358      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.