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.

NPA: 573 [Rate centres in NPA 573] [Dial plan for NPA 573]

NXX: 401

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-401 A St Marys MO STLSMOGZDS5  225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520      
573-401 0 St Marys MO STLSMOWQCMD  515J IP HORIZON LLC 520   2023-12-09   
573-401 1 St Marys MO STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520   2012-03-05   
573-401 2 St Marys MO CPGRMOLK0MD  5607 CHARTER FIBERLINK - MISSOURI, LLC - MO 520   2024-01-14   
573-401 3 St Marys MO STLSMOGZDS5  225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2013-05-05   
573-401 4 St Marys MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2016-09-29   
573-401 5 St Marys MO STLSMOWQCMD  515J IP HORIZON LLC 520   2023-12-09   
573-401 6 St Marys MO STLSMOGZDS5  225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2013-05-05   
573-401 7 St Marys MO WNVLMOXAXBX  508J CENTURYLINK COMMUNICATIONS, LLC 520   2014-07-24   
573-401 8 St Marys MO STLSMOGZ6MD  073H TELNYX LLC 520   2019-09-30   
573-401 9 St Marys MO   515J IP HORIZON LLC 520   2013-12-19   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.