Local Calling Guide

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Argyle, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
235-216 A   516C AT&T CORP. 521   2025-08-22   
235-216 7   516C AT&T CORP. 521   2025-08-22   
573-728 A ARGYMOPARS1  9533 SOUTHWESTERN BELL 521      
573-728 0   093F ONVOY, LLC - MO 521   2017-05-02   
573-728 1   9533 SOUTHWESTERN BELL 521      
573-728 2   093F ONVOY, LLC - MO 521   2019-11-29   
573-728 3   093F ONVOY, LLC - MO 521   2019-11-29   
573-728 4   073H TELNYX LLC 521   2020-07-23   
573-728 5   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 521   2014-07-31   
573-728 6   9533 SOUTHWESTERN BELL 521      
573-728 8   624H ONVOY SPECTRUM, LLC 521   2024-03-05   
573-728 9   9533 SOUTHWESTERN BELL 521      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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