Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Fremont, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
573-251 A FRMTMOXARS0  1151 BRIGHTSPEED OF EAST MISSOURI, LLC 520      
573-251 0   073H TELNYX LLC 520   2020-07-31   
573-251 1   145J TERRA NOVA TELECOM INC. 520   2025-07-04   
573-251 3   1151 BRIGHTSPEED OF EAST MISSOURI, LLC 520      
573-251 5   093F ONVOY, LLC - MO 520   2018-12-08   
573-251 7   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2015-10-06   
573-892 A STLSMOWQDS2  093F ONVOY, LLC - MO 520      
573-892 0   093F ONVOY, LLC - MO 520   2019-05-20   
573-892 8   093F ONVOY, LLC - MO 520   2019-05-20   
573-892 9   073H TELNYX LLC 520   2023-04-02   

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

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