Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 573 [Rate centres in NPA 573] [Dial plan for NPA 573]

NXX: 273

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-273 A Advance MO STLSMOGZDS5  225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520      
573-273 0 Advance MO   515J IP HORIZON LLC 520   2013-12-19   
573-273 1 Advance MO   225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2013-06-09   
573-273 2 Advance MO   225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2013-06-09   
573-273 3 Advance MO   093F ONVOY, LLC - MO 520   2016-08-09   
573-273 4 Advance MO   093F ONVOY, LLC - MO 520   2016-08-09   
573-273 5 Advance MO   225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2018-12-27   
573-273 6 Advance MO   093F ONVOY, LLC - MO 520   2021-07-24   
573-273 7 Advance MO   624H ONVOY SPECTRUM, LLC 520   2025-01-18   
573-273 8 Advance MO   093F ONVOY, LLC - MO 520   2021-12-19   
573-273 9 Advance MO   073H TELNYX LLC 520   2018-07-20   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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