The story
The company was formed through ASCII Corporation, spinning off their American distribution subsidiary as an independent corporation in 1998, and became a standalone publisher one year later. ASCII announced that Agetec will handle game publishing for the North American and European markets from April 2000.
Around approximately May 2018, all Agetec titles for Nintendo platforms were delisted from the Nintendo eShop in North America. Also around this time, their web site became a "server default" page. These events indicate the company has quietly become defunct.
From Wikipedia’s article on Agetec, shared under CC BY-SA 4.0.4