Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Cost, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
830-300 A BLVRTXXA5MD  903C ONVOY, LLC - TX 566      
830-300 0   903C ONVOY, LLC - TX 566   2023-12-09   
830-300 3   145J TERRA NOVA TELECOM INC. 566   2025-08-29   
830-300 6   7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 566   2023-12-04   
830-300 8   903C ONVOY, LLC - TX 566   2022-12-03   
830-437 A COSTTXXARS0  2083 GUADALUPE VALLEY TEL. COOP., INC. 566      
830-437 0   2083 GUADALUPE VALLEY TEL. COOP., INC. 566      
830-437 2   2083 GUADALUPE VALLEY TEL. COOP., INC. 566      
830-437 3   903C ONVOY, LLC - TX 566   2023-01-05   
830-437 4   2083 GUADALUPE VALLEY TEL. COOP., INC. 566      
830-437 5   2083 GUADALUPE VALLEY TEL. COOP., INC. 566      
830-437 6   2083 GUADALUPE VALLEY TEL. COOP., INC. 566      
830-437 7   2083 GUADALUPE VALLEY TEL. COOP., INC. 566      
830-437 8   2083 GUADALUPE VALLEY TEL. COOP., INC. 566      
830-437 9   2083 GUADALUPE VALLEY TEL. COOP., INC. 566      

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

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