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: 777

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
557-777 A Creve Coeur MO STLSMOGZEMD  145J TERRA NOVA TELECOM INC. 520      
557-777 0 Creve Coeur MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2022-11-19   
557-777 1 Creve Coeur MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2022-11-19   
557-777 2 Creve Coeur MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2023-08-10   
557-777 3 Creve Coeur MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2023-09-08   
557-777 4 Creve Coeur MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2023-09-08   
557-777 5 Creve Coeur MO STLSMOPL6MD  073H TELNYX LLC 520   2023-09-29   
557-777 6 Creve Coeur MO STLSMO09XMD  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520   2023-06-03   
557-777 7 Creve Coeur MO STLSMOGZEMD  145J TERRA NOVA TELECOM INC. 520   2022-10-27   
557-777 8 Creve Coeur MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2023-06-04   
557-777 9 Creve Coeur MO NWTPMOABGT1  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2023-08-24   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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