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: 423 [Rate centres in NPA 423] [Dial plan for NPA 423]

NXX: 632

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
423-632 A Wartburg TN KNVLTNMAYBX  204G TWIN LAKES COMMUNICATIONS, INC. - TN 474      
423-632 1 Wartburg TN KNVLTNMAYBX  204G TWIN LAKES COMMUNICATIONS, INC. - TN 474   2019-08-15   
423-632 2 Wartburg TN KNVLTNMAYHX  318J COMCAST IP PHONE, LLC 474   2023-08-27   
423-632 7 Wartburg TN KNVLTNMANMD  4806 LEVEL 3 COMMUNICATIONS, LLC - TN 474   2021-10-03   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.