You can easily block the websites in the Asus router. First, you need to open the web browser. Now you can enter www.router.asus.com. After this, you can enter the username and the password, here both are admins. Now you can go to the settings of the router. Here you can enable the parent control feature. After this you can go to the wireless settings here you can easily block the websites. If you need any help click on https://asusrouterssetups.com/2020/04/21/which-way-user-use-the-parental-control-feature-in-the-asus-ax6000-dual-band-router/
