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: 349

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
779-349 A Spring Valley IL PEORILPJX1Y  6529 T-MOBILE USA, INC. 368      
779-349 3 Spring Valley IL PRTNILXAX0X  224C ONVOY, LLC 368   2024-12-30   
779-349 5 Spring Valley IL PEORILPJX1Y  6529 T-MOBILE USA, INC. 368   2023-01-12   
779-349 6 Spring Valley IL PEORILPJX1Y  6529 T-MOBILE USA, INC. 368   2023-01-12   
779-349 7 Spring Valley IL PEORILPJX1Y  6529 T-MOBILE USA, INC. 368   2022-02-25   
779-349 8 Spring Valley IL PEORILPJX1Y  6529 T-MOBILE USA, INC. 368   2022-02-25   
779-349 9 Spring Valley IL PEORILPJX1Y  6529 T-MOBILE USA, INC. 368   2022-02-25   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.