Just type it into the address bar: https://snipboard.io/kbLTso.jpg (previously posted that screenshot in 2021 https://news.ycombinator.com/item?id=29050936)
$ getent hosts 127.1 127.0.0.1 127.1
...but you realize we're conversing via a website, right? :D Most people will already be in a browser!
Even hex works, but doesn't hit a site that responds: (ping 0xcafebeef).