Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 830 [Rate centres in NPA 830] [Dial plan for NPA 830]

NXX: 454

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
830-454 A Johnson City TX FRBGTXXAPS1  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-454 0 Johnson City TX FRBGTXXAPS1  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-454 2 Johnson City TX SNANTX39DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 566   2024-12-20   
830-454 3 Johnson City TX SNANTX39DS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 566   2015-11-16   
830-454 5 Johnson City TX   145J TERRA NOVA TELECOM INC. 566   2025-08-22   

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

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