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).
Duxs has only four letters and just one syllable. One-syllable names are very rare and exceptionally desirable. Successful brands using one syllable names include Square, Dell and Path.
Duxs.com is a dot com domain. Dot com domains are the most prestigious domain extension in the world, used by famous websites like youtube.com. When most people think of a website, they think of a dot com.
This domain was first registered in April 2005. Older domains have an advantage when ranking in search engines.