How to prevent the browser (safari or opera) from visiting certain sites when you type them into the address bar?

Question

Opera

I am looking for extensions that do not allow opening certain sites when you drive them into the address bar of the browser. In order not to open, block, even a full-screen warning, or a sound siren. Fingers, as luck would have it, automatically remember these addresses.

Answer 1

In windows/system32/drivers/etc/hosts write
127.0.0.1 pnhub.com