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: 314

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
325-314 A Anson TX ABLNTXORXRX  624H ONVOY SPECTRUM, LLC 550      
325-314 0 Anson TX ABLNTXORXRX  624H ONVOY SPECTRUM, LLC 550   2022-01-12   
325-314 1 Anson TX   612K CSC VOICE, LLC 550   2024-03-30   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.