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.

Knippa, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
830-242 A   145J TERRA NOVA TELECOM INC. 566      
830-242 2   145J TERRA NOVA TELECOM INC. 566   2025-08-29   
830-242 6   516J TON80 COMMUNICATIONS, LLC 566   2021-09-03   
830-932 A   793K TWC IP ENABLED SERVICES, LLC 566      
830-932 0   793K TWC IP ENABLED SERVICES, LLC 566   2019-05-18   
830-934 A KNPPTXXADS0  2090 ALENCO COMMUNICATIONS, INC. 566      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.