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: 399

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
325-399 A Stamford TX ABLNTXORX4X  903C ONVOY, LLC - TX 550      
325-399 0 Stamford TX ABLNTXORLMD  004F BANDWIDTH.COM CLEC, LLC - TX 550   2018-10-06   
325-399 1 Stamford TX ABLNTXORLMD  004F BANDWIDTH.COM CLEC, LLC - TX 550   2019-04-21   
325-399 2 Stamford TX ABLNTXORX4X  903C ONVOY, LLC - TX 550   2021-03-14   
325-399 3 Stamford TX ABLNTXORX4X  903C ONVOY, LLC - TX 550   2018-07-27   
325-399 4 Stamford TX ABLNTXORX4X  903C ONVOY, LLC - TX 550   2021-03-14   
325-399 6 Stamford TX ABLNTXORX4X  903C ONVOY, LLC - TX 550   2020-09-13   
325-399 7 Stamford TX ABLNTXORX4X  903C ONVOY, LLC - TX 550   2020-09-13   
325-399 8 Stamford TX ABLNTXORXVX  474J TAYLOR TELEPHONE COOP, INC. DBA TAYLOR TELECOM 550   2019-11-28   
325-399 9 Stamford TX ABLNTXORX4X  903C ONVOY, LLC - TX 550   2020-09-13   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.