Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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 SNANTXCADS6  177F PEERLESS NETWORK OF TEXAS, LLC - TX 566      
830-825 1 SNANTXCAHMD  073H TELNYX LLC 566      
830-825 2 RNMTTXXBRS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-825 3 RNMTTXXBRS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-825 4   145J TERRA NOVA TELECOM INC. 566      
830-825 5 SNANTXCA88Z  516J TON80 COMMUNICATIONS, LLC 566      
830-825 6 FRBGTXXA0MD  903C ONVOY, LLC - TX 566      
830-825 7 SNANTXCA60Z  508J CENTURYLINK COMMUNICATIONS, LLC 566      
830-825 8 SNANTXCADS6  177F PEERLESS NETWORK OF TEXAS, LLC - TX 566      
830-825 9 SNAOTXWC0MD  139F WORLDCALL INTERCONNECT INC. 566      
830-838 A   624H ONVOY SPECTRUM, LLC 566   2024-04-22   
830-838 0   624H ONVOY SPECTRUM, LLC 566      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.