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: 202

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
557-202 A St Louis MO STLSMO05XWX  318J COMCAST IP PHONE, LLC 520      
557-202 0 St Louis MO   093F ONVOY, LLC - MO 520   2023-10-22   
557-202 1 St Louis MO   318J COMCAST IP PHONE, LLC 520   2023-05-26   
557-202 2 St Louis MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2025-04-02   
557-202 3 St Louis MO   093F ONVOY, LLC - MO 520   2023-07-12   
557-202 4 St Louis MO   093F ONVOY, LLC - MO 520   2023-07-12   
557-202 5 St Louis MO   093F ONVOY, LLC - MO 520   2023-07-12   
557-202 6 St Louis MO   093F ONVOY, LLC - MO 520   2024-03-09   
557-202 7 St Louis MO   093F ONVOY, LLC - MO 520   2024-03-09   
557-202 8 St Louis MO   490J DISH WIRELESS, LLC 520   2023-08-31   
557-202 9 St Louis MO   7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520   2023-07-03   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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