Local Calling Guide

Area code/prefix search

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

NXX: 251

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-251 A Fremont MO FRMTMOXARS0  1151 BRIGHTSPEED OF EAST MISSOURI, LLC 520      
573-251 0 Fremont MO STLSMOWQ8MD  073H TELNYX LLC 520   2020-07-31   
573-251 1 Fremont MO   145J TERRA NOVA TELECOM INC. 520   2025-07-04   
573-251 3 Fremont MO FRMTMOXARS0  1151 BRIGHTSPEED OF EAST MISSOURI, LLC 520      
573-251 5 Fremont MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2018-12-08   
573-251 7 Fremont MO STLSMOPLDS4  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2015-10-06   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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