Dnsioweb.net is taken for a pesky browser hijacker, promoted via free download and bundling. Its appearance is disapproved. I think it is necessary to make you know its common features and harms, which is conducive to guard against it and similar threats.
If you want to remove it, there are two removal guides-manual removal and automatic removal guides in the post, Remove Dnsioweb.net from Your Laptop or Desktop-Removal Guide in pc-superman.com.