This short and diverse domain name is anything "in" style.
Insy has only four characters and only two syllables. Two-syllable names are highly rare and exceptionally valued. Two syllable names are used by established brands like Buffer, Visa and Google.
Insy.com is a dot-com domain. Dot com domains are the most valuable top-level-domain in the world, used by famous websites like twitter.com. A dot-com is the first thing people think of when they think of a website.