Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 557 [Rate centres in NPA 557] [Dial plan for NPA 557]

NXX: 246

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
557-246 A St Louis MO STLSMOGZZMD  700J WAVENATION, LLC 520   2026-01-30   
557-246 0 St Louis MO STLSMOGZZMD  700J WAVENATION, LLC 520   2026-01-30   
557-246 2 St Louis MO STLSMOGZLMD  490J BOOST SUBSCRIBERCO L.L.C. 520   2026-06-02   
557-246 3 St Louis MO STLSMOGZLMD  490J BOOST SUBSCRIBERCO L.L.C. 520   2026-08-18   
557-246 4 St Louis MO   093F ONVOY, LLC - MO 520   2026-10-15   
557-246 5 St Louis MO   993E BANDWIDTH.COM CLEC, LLC - MO 520   2026-09-13   
557-246 6 St Louis MO   993E BANDWIDTH.COM CLEC, LLC - MO 520   2026-09-13   
557-246 7 St Louis MO   993E BANDWIDTH.COM CLEC, LLC - MO 520   2026-09-13   
557-246 8 St Louis MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2026-06-22   
557-246 9 St Louis MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2026-06-22   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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