This four-letter domain is distinctive and easy to pronounce and spell. It sounds like "ducks", which leads to obvious branding opportunities.
As an abstract name this could almost anything, including a physical product (e.g. cleaning, pharmaceutical) website or app (social, health).
The name "duxs" has only four letters and just one syllable. One-syllable names are very rare and extremely valued. Leading companies using one syllable names include Nike, Box and Path.
This domain was first registered in April 2005. Older domains have an advantage when ranking in search engines.
Duxs.com is a dot-com domain. Dot com domains are the most sought after domain extension in the world, famously used by websites like facebook.com. When most people think of a website, they think of a dot-com.