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: 372

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
430-372 A Oak Hill TX MTENTXXA0MD  583C TIME WARNER CBLE INFO SVC (TX) DBA TIME WARNER CBL 554   2024-12-29   
430-372 1 Oak Hill TX MTENTXXA0MD  583C TIME WARNER CBLE INFO SVC (TX) DBA TIME WARNER CBL 554   2024-12-29   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.