Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 559 [Rate centres in NPA 559] [Dial plan for NPA 559]

NXX: 857

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-857 A Friant CA FRSNCA0110Z  490J BOOST SUBSCRIBERCO L.L.C. 728      
559-857 0 Friant CA FRSNCA0110Z  490J BOOST SUBSCRIBERCO L.L.C. 728   2023-08-19   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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