With no immediate connotations or connections, this abstract domain name could work for a huge range of companies.
X3e has only three characters and only two syllables. Two-syllable names are exceptionally rare and very prestigious. Successful brands using two syllable names include Delta, Starbucks and Buffer.
This domain was first registered in March 2004. Older domains have an advantage when ranking in search engines.
X3e.com is a dot com domain. Dot com domains are the most prestigious top-level-domain in the world, famously used by websites like twitter.com. When you own a dot com, it is much easier to rank for your own name in search engines.