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: 207

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
557-207 A Oakville MO STLSMOGZVMD  598J FIVE9, INC. 520      
557-207 0 Oakville MO STLSMOGZVMD  598J FIVE9, INC. 520   2023-07-30   
557-207 1 Oakville MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-05-25   
557-207 2 Oakville MO   093F ONVOY, LLC - MO 520   2025-04-07   
557-207 6 Oakville MO   7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520   2025-03-10   
557-207 8 Oakville MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-07-12   
557-207 9 Oakville MO STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520   2024-11-11   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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