Local Calling Guide

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Mertzon, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
325-383 A   515J IP HORIZON LLC 961   2025-04-04   
325-383 1   515J IP HORIZON LLC 961   2025-04-04   
325-383 2   515J IP HORIZON LLC 961   2025-04-04   
325-632 A MTZNTXXARS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 961      
325-632 0   903C ONVOY, LLC - TX 961   2020-11-21   
325-632 1   903C ONVOY, LLC - TX 961   2020-11-21   
325-632 2   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 961      
325-632 3   903C ONVOY, LLC - TX 961   2017-05-04   
325-632 4   073H TELNYX LLC 961   2021-03-22   
325-632 5   903C ONVOY, LLC - TX 961   2021-06-03   
325-632 6   903C ONVOY, LLC - TX 961   2021-06-03   
325-632 7   508J CENTURYLINK COMMUNICATIONS, LLC 961   2016-07-28   
325-632 8   903C ONVOY, LLC - TX 961   2019-11-03   
325-632 9   903C ONVOY, LLC - TX 961   2019-11-03   
325-835 A MTZNTXXARS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 961      
325-835 0   624H ONVOY SPECTRUM, LLC 961   2024-01-05   
325-835 1   515J IP HORIZON LLC 961   2022-03-26   
325-835 2   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 961      
325-835 3   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 961      
325-835 5   515J IP HORIZON LLC 961   2024-01-03   
325-835 6   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 961      
325-835 7   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 961      
325-835 8   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 961      
325-835 9   515J IP HORIZON LLC 961   2024-01-03   

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

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