Broadcasting exclusively in high-definition format, HDNet is available via cable and satellite television. The channel currently shows a wide variety of HD programming, using the 1080i video standard, without focusing on any specific genre.

On September 6, 2001, HDNet was launched by Dallas Mavericks owner and billionaire Mark Cuban and Phillip Garvin from studios in Colorado. In December 2001 and January 2002 HDNet aired exclusive HD coverage of the U.S. invasion of Afghanistan with former CNN correspondent Peter Arnett. In February 2002, they originated eight hours of high definition video each day from the 2002 Winter Olympics in Salt Lake City. This feed was picked up by NBC and aired in 24 hour rotation on NBC's digital television stations. HDNet has also broadcast the last two Space Shuttle launches. The channel has since grown to be available on a number of platforms. Unlike most other broadcasters offering High-Definition programming, HDNet is not available in standard definition at all. HDNet is thus free to use the entire widescreen picture. HDNet's sports programming also uses wider shots of the playing field or arena than most SD telecasts, since the detail of the HD picture makes up for the wider framing.

On July 2nd HDNet changed name to AXS TV.