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.

Switch: HSTNTXJAX1Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
346-692 A Houston TX 839J EON TELECOM, INC. 560      
346-741 A Houston TX 839J EON TELECOM, INC. 560   2024-01-18   
346-841 A Beach City TX 839J EON TELECOM, INC. 560   2024-11-28   
346-844 A Deer Park TX 839J EON TELECOM, INC. 560   2024-11-28   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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