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: 346 [Rate centres in NPA 346] [Dial plan for NPA 346]

NXX: 685

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-685 A Humble TX HSTNTXYADS5  903C ONVOY, LLC - TX 560      
346-685 0 Humble TX HSTNTX362MD  939H COMMIO, LLC 560   2024-01-14   
346-685 1 Humble TX HSTNTX362MD  939H COMMIO, LLC 560   2024-01-14   
346-685 2 Humble TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2023-10-05   
346-685 3 Humble TX HSTNTXYADS5  903C ONVOY, LLC - TX 560   2023-10-05   
346-685 4 Humble TX HSTNTX362MD  939H COMMIO, LLC 560   2024-01-14   
346-685 5 Humble TX HSTNTX362MD  939H COMMIO, LLC 560   2024-01-14   
346-685 6 Humble TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2024-01-20   
346-685 7 Humble TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2024-01-20   
346-685 8 Humble TX HSTNTX362MD  939H COMMIO, LLC 560   2024-01-14   
346-685 9 Humble TX HSTNTX362MD  939H COMMIO, LLC 560   2024-01-14   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.