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: 832 [Rate centres in NPA 832] [Dial plan for NPA 832]

NXX: 399

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
832-399 A Houston Suburban TX   903C ONVOY, LLC - TX 560      
832-399 0 Houston Suburban TX   903C ONVOY, LLC - TX 560   2025-10-20   
832-399 3 Houston Suburban TX   903C ONVOY, LLC - TX 560      
832-399 4 Houston Suburban TX   903C ONVOY, LLC - TX 560      
832-399 5 Houston Suburban TX   903C ONVOY, LLC - TX 560      
832-399 6 Houston Suburban TX   903C ONVOY, LLC - TX 560      
832-399 7 Houston Suburban TX   145J TERRA NOVA TELECOM INC. 560   2025-10-21   
832-399 8 Houston Suburban TX   903C ONVOY, LLC - TX 560      
832-399 9 Houston Suburban TX   903C ONVOY, LLC - TX 560      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.