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: 325 [Rate centres in NPA 325] [Dial plan for NPA 325]

NXX: 401

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
325-401 A Abilene TX   321J HD CARRIER LLC 550   2026-09-20   
325-401 7 Abilene TX   321J HD CARRIER LLC 550   2026-09-20   
325-401 8 Abilene TX   321J HD CARRIER LLC 550   2026-09-20   
325-401 9 Abilene TX   321J HD CARRIER LLC 550   2026-09-20   

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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