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.

Willow City, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
830-685 A WLCYTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-685 0   004F BANDWIDTH.COM CLEC, LLC - TX 566   2025-01-19   
830-685 2   073H TELNYX LLC 566   2019-09-27   
830-685 3   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-685 4   145J TERRA NOVA TELECOM INC. 566   2025-08-24   
830-685 5   903C ONVOY, LLC - TX 566   2021-09-03   
830-685 7   508J CENTURYLINK COMMUNICATIONS, LLC 566   2018-01-11   
830-685 8   624H ONVOY SPECTRUM, LLC 566   2021-06-24   
830-685 9   177F PEERLESS NETWORK OF TEXAS, LLC - TX 566   2013-10-06   
830-856 A WLCYTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-856 0   4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-856 2   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 566   2006-09-25   
830-856 5   624H ONVOY SPECTRUM, LLC 566   2021-12-04   
830-856 6   624H ONVOY SPECTRUM, LLC 566   2021-12-04   
830-856 9   177F PEERLESS NETWORK OF TEXAS, LLC - TX 566   2021-10-27   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.