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 only one syllable. Single-syllable names are exceptionally rare and very desirable. Established brands using one syllable names include Path, Square and Box.
Duxs.com is a dot-com domain. Dot com domains are the most valuable top-level-domain in the world, famously used by websites like twitter.com. Owning a dot-com says that you own the word "duxs" online.
This domain was first registered in April 2005. Older domains have an advantage when ranking in search engines.