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.
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Harper, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
830-864 A HRPRTXXARS0  2097 WINDSTREAM COMMUNICATIONS KERRVILLE, L.P. 566      
830-942 A SNANTXCA88Z  516J TON80 COMMUNICATIONS, LLC 566      
830-942 0   413F HILL COUNTRY TELECOMMUNICATIONS, LLC - TX 566   2023-12-09   
830-942 6   516J TON80 COMMUNICATIONS, LLC 566   2022-04-20   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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