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.

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   2021-07-08   
430-599 5 Dorchester TX   516J TON80 COMMUNICATIONS LLC 552   2021-10-29   
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: Fri, 01 Jul 2022 02:53:40 UTC

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