The Ndextraincomi.info website is an empty page that may claim to host interesting content in order to trick you into visiting it. However, there is no meaningful content hosted on this website, so you should not waste your time with it. This website hosts a scam that is often referred to as 'Please Click Allow to Continue.'
When you open the Ndextraincomi.info page, you will be asked to click on the 'Allow' button. The Ndextraincomi.info site will present this prompt as a security check, which needs to be completed by every user in order for them to confirm their legitimacy. However, this is a trick whose goal is to mislead users into permitting the Ndextraincomi.info website to send them notifications via the Web browser. The Ndextraincomi.info site will use this permission to spam you with advertisements that may promote a variety of dodgy content, shady services, and low-quality products, so you should avoid engaging with them.
It is best to revoke the permissions you have granted the Ndextraincomi.info site. You can do this via the configurations of your Web browser.