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 characters and just one syllable. One-syllable names are exceptionally rare and highly sought after. Established brands using one syllable names include Box, Dell and Nike.
Duxs.com is a dot-com domain. Dot com domains are synonymous with websites. When you own a dot-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.