Local Calling Guide

Area code/prefix search

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Round Mountain, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
830-825 A RNMTTXXBRS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-825 0   177F PEERLESS NETWORK OF TEXAS, LLC - TX 566   2014-05-02   
830-825 1   073H TELNYX LLC 566   2019-09-27   
830-825 2   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-825 3   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-825 4   145J TERRA NOVA TELECOM INC. 566   2021-01-27   
830-825 5   516J TON80 COMMUNICATIONS, LLC 566   2021-09-18   
830-825 6   903C ONVOY, LLC - TX 566   2021-09-03   
830-825 7   508J CENTURYLINK COMMUNICATIONS, LLC 566   2018-01-11   
830-825 8   177F PEERLESS NETWORK OF TEXAS, LLC - TX 566   2021-10-27   
830-825 9   139F WORLDCALL INTERCONNECT INC. 566   2008-12-13   
830-838 A FRBGTXXARMD  624H ONVOY SPECTRUM, LLC 566   2024-04-22   
830-838 0   624H ONVOY SPECTRUM, LLC 566   2024-04-22   

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

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