Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 430 [Rate centres in NPA 430] [Dial plan for NPA 430]

NXX: 599

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
430-599 A Dorchester TX DLLSTX97X5X  965H FRACTEL, LLC 552      
430-599 0 Dorchester TX   903C ONVOY, LLC - TX 552   2023-07-24   
430-599 3 Dorchester TX   624H ONVOY SPECTRUM, LLC 552   2024-01-04   
430-599 5 Dorchester TX   516J TON80 COMMUNICATIONS, LLC 552   2021-10-29   
430-599 7 Dorchester TX   177F PEERLESS NETWORK OF TEXAS, LLC - TX 552   2024-03-09   
430-599 8 Dorchester TX   177F PEERLESS NETWORK OF TEXAS, LLC - TX 552   2022-02-04   
430-599 9 Dorchester TX   965H FRACTEL, LLC 552   2021-07-08   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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