Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Creve Coeur, MO

<< 1 2 3 4 5 6

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

<< 1 2 3 4 5 6

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.