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 word "duxs" contains only four characters and only one syllable. One-syllable names are highly rare and very desirable. Leading companies using one syllable names include Chase, Dell and Path.
Duxs.com is a .com domain. Dot com domains are the most prestigious domain extension in the world, famously used by websites like twitter.com. When you own a .com, it is much easier to rank for your own name in search engines.
This domain was first registered in April 2005. Older domains have an advantage when ranking in search engines.