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: 226

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
557-226 A Creve Coeur MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-08-06   
557-226 0 Creve Coeur MO STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520   2024-10-25   
557-226 1 Creve Coeur MO STLSMO01X0Y  732J NUSO, LLC 520   2024-10-26   
557-226 2 Creve Coeur MO STLSMO01X0Y  732J NUSO, LLC 520   2024-10-26   
557-226 4 Creve Coeur MO   732J NUSO, LLC 520   2025-07-04   
557-226 5 Creve Coeur MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-08-06   
557-226 6 Creve Coeur MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-08-06   
557-226 7 Creve Coeur MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-08-06   
557-226 8 Creve Coeur MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-08-06   
557-226 9 Creve Coeur MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-08-06   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

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