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: 204

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
557-204 A St Louis MO STLSMOGZUMD  598J FIVE9, INC. 520      
557-204 0 St Louis MO STLSMOGZUMD  598J FIVE9, INC. 520   2023-07-06   
557-204 1 St Louis MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-05-12   
557-204 2 St Louis MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2024-11-22   
557-204 3 St Louis MO STLSMOPL5MD  197D VONAGE AMERICA LLC 520   2024-05-24   
557-204 4 St Louis MO STLSMOGZLMD  490J DISH WIRELESS, LLC 520   2024-06-01   
557-204 5 St Louis MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2024-11-22   
557-204 6 St Louis MO STLSMOWQ8MD  073H TELNYX LLC 520   2024-08-31   
557-204 7 St Louis MO STLSMOWQ8MD  073H TELNYX LLC 520   2024-08-31   
557-204 8 St Louis MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-05-12   
557-204 9 St Louis MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2023-09-04   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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