Local Calling Guide

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Highlands EMS, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
281-843 A HGLNTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 560      
281-843 0   624H ONVOY SPECTRUM, LLC 560   2024-10-15   
281-843 1   903C ONVOY, LLC - TX 560   2018-02-12   
281-843 2   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 560      
281-843 3   177F PEERLESS NETWORK OF TEXAS, LLC - TX 560   2020-09-25   
281-843 4   903C ONVOY, LLC - TX 560   2018-07-05   
281-843 5   177F PEERLESS NETWORK OF TEXAS, LLC - TX 560   2018-09-01   
281-843 6   903C ONVOY, LLC - TX 560   2020-08-22   
281-843 7   903C ONVOY, LLC - TX 560   2020-08-22   
281-843 8   177F PEERLESS NETWORK OF TEXAS, LLC - TX 560   2013-04-26   
281-843 9   177F PEERLESS NETWORK OF TEXAS, LLC - TX 560   2013-04-26   

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

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