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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NPA: 830 [Rate centres in NPA 830] [Dial plan for NPA 830]

NXX: 942

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
830-942 A Harper TX SNANTXCA88Z  516J TON80 COMMUNICATIONS, LLC 566      
830-942 0 Harper TX INGRTXXADS1  413F HILL COUNTRY TELECOMMUNICATIONS, LLC - TX 566   2023-12-09   
830-942 6 Harper TX SNANTXCA88Z  516J TON80 COMMUNICATIONS, LLC 566   2022-04-20   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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