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: 337

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
325-337 A Norton TX ABLNTXORXWX  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 550      
325-337 0 Norton TX ABLNTXORXWX  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 550   2023-07-24   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.